Low Voltage. Residual-current protection relays

Transcription

1 Low Voltage Residual-current protection relays

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6 Class II insulated for the entire range as per standards IEC/EN and NFC

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8 Front-panel mount DIN rail with clip-in toroid with mounting lugs

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12 TOOLS p p p p p

13 Selection guide A-2 Operation and use A-4 General characteristics A-5 Discrimination between residual-current devices A-12 Electromagnetic compatibility A-13 Description A-14 Characteristics A-24 Installation recommendations B-1 Dimensions and connection C-1 Wiring diagrams D-1 Additional characteristics E-1 Catalogue numbers F-1

14 Protection relays (2) RH10 RH21 RH99 All Vigirex products are type A (1) devices, also covering the requirements of type AC devices. Functions b b b b b b Wiring b b b b b b Mounting b b b b b b Rated operational voltage b b b b b b Thresholds 2 user-selectable thresholds 9 user-selectable thresholds Time delays Instantaneous 1 user-selectable time delay Instantaneous 9 user-selectable time delays Display and indications (6) b b b b b b Test with or without actuation of output contacts b b b b b b b b b Communication Characteristics Sensors b b b (7) b b b (1) Type A relay up to I n = 5 A. (2) Relay with output contact requiring local, manual reset after fault clearance. (3) Relay with output contact that automatically resets after fault clearance. (4) Mandatory with an RMH (multiplexing for the 12 toroids). (5) Mandatory with an RM12T (multiplexing for the 12 toroids).

15 Monitoring relays (3) RH197M RH197P RHUs or RHU RH99 RMH (4) b b b b b b b b b b b b b b b b (8) b (8) b b (5) b b b b b b b b b b b b b b b b b b 19 user-selectable thresholds 19 user-selectable thresholds 1 adjustable threshold 1 adjustable threshold 9 user-selectable thresholds 1 adjustable threshold/channel 1 adjustable threshold/channel 7 user-selectable time delays 7 user-selectable time delays 1 adjustable threshold instantaneous instantaneous 1 adjustable threshold 9 user-selectable time delays 1 adjustable threshold/channel 1 adjustable threshold/channel b (9) b (9) b b b b b b b b b b b b b b b b (10) b b b b b b b b b b b b b b b b b b b b b b b b b (6) Depending on the type of wiring (optimum continuity of service or optimum safety). (7) See characteristics page A-32 (8) On a bargraph. (9) No voltage presence relay. (10) With actuation of contacts only.

16 Vigirex I (A) (s) I n (A): residual operating-current setting (the relay operates for a fault current u I n). Schneider Electric guarantees non-operation for all fault currents < 0.8 I n. t (s): minimum non-operating time. Function b b b Residual-current protection relay b b b b b Earth-leakage monitoring relays b b Use

17 The mark indicates that the product meets both US and Canadian safety requirements. Compliance with standards b b b b b b b b b b v v b b b b Ground fault sensing and relaying equipment UL 1053 and CSA 22.2 No. 144 for North American and North American b b b v v b v v b

18 Environmental withstand capacity b b b Front-panel mount device. DIN device. Degree of pollution Ambient temperature b b Reinforced insulation for direct connection to upstream distribution system b b Insulation class Degree of protection

19 Information on the case. Vibration withstand capacity Labels and markings b b b b Recycling b v v b b Maximum safety Protection of persons against direct contact is ensured by an overall breaking time for the faulty circuit of less than 40 milliseconds: The tolerances on the protection threshold I the residual-current protection standard: Operating tolerances for the protection threshold I n: standards. Vigirex. Gain in immunity to nuisance tripping with Vigirex.

20 Inverse-time tripping curve: b b Curve 1: inverse-time tripping curve as per IEC annex M. n. Curve 3: transient zero phase-sequence current upon load energisation. Zone of optimised continuity of service due to the inverse-time tripping curve. Non-tripping zone (curve 2) Hz.. Gain in immunity to nuisance tripping with Vigirex.

21 is designed to provide: b b Rms measurements of earth-leakage currents tolerances on the protection threshold and the inverse-time tripping curve built into the Vigirex relays optimise protection of life and property and enhance the continuity of service. Non-tripping zone. Gain in immunity to nuisance tripping with Vigirex = optimised continuity of service. Reduced tolerances zone. Mandatory protection zone. Continuous self-monitoring of Vigirex relays b b b b Two wiring techniques for protection relays b b See the wiring diagrams in chapter B.

22 Test and reset Test According to standards IEC and NF C 15100, a periodic test is required to check correct operation of the residual-current protection system. b v v b Reset Test and reset modes Four possible modes Actuation of output contacts No (1) Yes b b b (1) b (1) b (2) b (2) b b (1) Except for RMH. (2) Easy switchboard acceptance tests Supply connections for the DIN and front-panel mount formats. Formats for all installation systems b b b b Installation system b b Suitable format DIN device with mounting lugs secured to a mounting plate.

23 Formats for all installation systems (cont.) DIN device. Automatic control panel or machine panel. Power distribution switchboard. Main LV switchboard. DIN device with clip-in toroid. Motor Control Centre (MCC). Front-panel mount device. Covers Lead-sealable cover.

24 Implementing discrimination b b b b b u b u Note: a residual-current device does not limit the fault current. That is why current discrimination alone is not possible. The Vigirex devices, combined with Schneider Electric breaking devices (switches, circuit breakers), have successive operating-current and timedelay settings that enhance the discrimination rules mentioned above. Discrimination rules System Setting (Schneider Electric breaking device + RCD) Upstream Downstream Ratio I n Time delay (1) (1) (1) (1) A difference of two settings is required for the 0.25 s setting (i.e. the 0.5 s and the 0.25 s settings). Note: for further information, see chapter C.

25 Electromagnetic disturbances b b b b b b b b b b b b Behaviour during micro-outages in the auxiliary supply

26 Relay marking Controls Indications 5 6 RH10M. LED status Meaning on fault Key: off green (or red) RH21M. Settings 15 b b b Connection RH99M.

27 Relay marking Controls Indications LED status on fault Meaning Key: off green A RH197M. A Settings 15 b v v b v v v b b 16 Connection

28 Relay marking Controls RH10P. Indications 2 3 LED status on fault Meaning RH21P. Key: off green (or red) Settings 10 b b b RH99P. Connection Connections on the back of the relay.

29 RH197P Relay marking Controls 5 6 Indications , 19, 20, 21 LED status on fault Key: off green (or red) Meaning Connections on the back of the relay Status of the indication LEDs according to the measured fault current (% I n). Settings b b 25 b b b v v v v v v v v v v Connection Position of 22 and 23 Actual trip threshold I n (A)

30 RHUs and RHU. Relay marking 1 13 Controls Indications LEDs Measurement LEDs Digital display (3 digits) Setting LEDs alarm fault I, % (I n), max units I alarm, t alarm (s), I n, t n (s) Meaning Case for a RHU relay set to I alarm = 70 ma and I n = 90 ma. Key: off green (or red) Connection Connections on the back of the relay.

31 Relay marking 1 Controls RMH. Indications Measurement LEDs Digital display LEDs Concerned Setting LEDs Meaning channel(s) (1) (3 digits) pre-al. alarm I, % (I n), max units I pre-al., t pre-al. (s), I alarm, t alarm (s) (1) In red. Key: off green (or red)

32 RMH connection RM12T multiplexer connection Connections on the back of the RMH. Front of RM12T multiplexer.

33 DC150 OK error N 1 N N 2 com. 24V BBus com. error N 1 N 2 9 JBus b b b Overview of functions Note: a complete description of the communication system and the protocol are provided in the manual for the DC150 data concentrator. Remote control RHU RMH b b Status indications b b b b Controls b b b b b b Protection settings b b b b b b b b Operating and maintenance aids b b b b b b b b b b b b b Electrical-installation management Communication interface Communication bus Devices

34 DC concentrator Description of the front panel Main characteristics b v v b b b

35 A type closed toroid: SA200. Compatibility with toroids b b v v u Adaptation to installations b b b y Compatibility with rectangular sensors u Withstand capacity for high residual-current faults POA split toroid. Temperature ranges b v v b v v Rectangular sensor.

36 Vigirex relays RH10 RH21 General characteristics y y (1) b b Electrical characteristics as per IEC and EN 60755, IEC and EN , UL 1053 and CSA C22.2 N 144 for RH10 to 99 with Ue y 220 V b b b b b b b b b b b b (2) (2) y b b b b (6) b b b b b b (1) Type A relays up to 5 A. (2) 80 % to 120 % Ue if Ue < 20 V. (3) 80 % to 110 % Ue if Ue < 28 V. (4) 85 % during energisation. (5) < 10 % of I n: display = 0 and > 200 % of I n: display = SAT.

37 RH99 RH197M RH197P RHUs and RHU y y y y b b b b b b b b b b b (8) b b b b (8) b b b b (8) b b b (2) (3) (4) b b b b b b b b (5) y (7) y b b b b b b (9) b b b b b b (6) Maximum time to clear the fault current when combined with a Schneider Electric circuit breaker or switch rated y 630 A. (7) Depending on version. (8) 110 VAC, 230 VAC and 400 VAC only. (9) Not available for DC version.

38 Vigirex relays RH10 - RH21 - RH99 Electrical characteristics as per IEC and EN 60755, IEC and EN , UL 1053 and CSA C22.2 N 144 for RH10 to 99 with Ue y 220 V (cont.) (1) b b b Communication Mechanical characteristics DIN Front-panel mount b b Environment (2) Sensors and accessories (3) b b u b (1) Depending on the type of wiring (optimum continuity of service or optimum safety). (2) Compatibility for both relay and sensor. (3) Compatibility with E type toroids in existing installations (see restrictions in chapter B, Installation and connection ). (4) No voltage presence relay. (5) By bargraph.

39 RH197 RHUs and RHU b (4) b b b b b b (5) b b b b DIN Front-panel mount Front-panel mount b b b DIN Front-panel mount b b b b b b

40 RH99M. RH99P. Vigirex relays General characteristics Electrical characteristics yy y RMH. RM12T. (1) 80 % to 120 % Ue if Ue < 20 V. (2) -15 % during energisation.

41 RH99 y b RMH and RM12T associated y b b b b b (1) (2) b b b b b yyy b b b b b

42 RH99M. RH99P. Vigirex relays Electrical characteristics (cont.) Communication Mechanical characteristics RMH. RM12T. Environment (1) Sensors and accessories (2) (1) Compatibility for both relay and sensor. (2) Compatibility with E type toroids in existing installations (see restrictions in chapter B, Installation and connection ). u

43 RH99 RMH and RM12T associated RMH RM12T b b b b b b b b b b DIN Front-panel mount DIN Front-panel mount b b b b b b b b b b

44 A type closed toroid: IA80. OA type split toroid: GOA. Rectangular sensor. Sensors Associated relays Use General characteristics Electrical characteristics Sensor characteristics Icw I w Mechanical characteristics Type of sensor Wiring Wire size (mm²) for resistance R = 3 Mounting Environment (1) For I n u 500 ma with RH10, RH21, RH99, RH197, RHUs et RHU. (2) From 0.5 to 2.5 mm².

45 A type closed toroid OA type split toroid Rectangular sensor (1) b b b b b b TA30 PA50 IA80 MA120 SA200 GA300 POA GOA 280 x x 160 Dimensions (mm) Weight (kg) Dimensions (mm) Weight (kg) Inside dimensions (mm) Weight (kg) Max. link length (m) Max. link length (m) Max. link length (m) (2) (2) (2) b b

46 TOOLS p p p p p

47 Functions and characteristics A-1 Relays and associated toroids B-2 Possible installation positions B-4 Connection B-6 Selection and installation instructions for toroids and rectangular sensors B-9 Dimensions and connection C-1 Wiring diagrams D-1 Additional characteristics E-1 Catalogue numbers F-1

48 Residual-current protection relay Multi 9 format (DIN rail mount) RH10M. RH21M. RH99M. RH197M. Multi 9 format (with mounting accessories (1) ) RH10M. RH21M. RH99M. (1) Supplied as standard, to be clipped into relay for installation on a mounting plate. Front-panel mount format RH10P. RH21P. RH99P. RH197P RHUs and RHU.

49 Monitoring relays Multi 9 format Mounting accessories RH99M. RM12T. RH99M. Front-panel mount format Toroids RH99P. Closed from 30 to 300 mm RMH. Rectangular sensors A toroid. GA300 toroid. OA toroid. 280 x 115 mm. 470 x 160 mm. Selection and compatibility of toroids and rectangular sensors Type of sensor Type of Vigirex relay Closed toroid Split toroid Rectangular sensor (1) RH , RH197, RHUs, RHU and RMH b b b b b b b b (1) See restrictions in table below. Sensor restrictions table Relays Sensors RH10, RH21, RH99, RH197, RHUs, RHU and RMH u u

50 Possible installation positions Multi 9 format YES YES YES Front-panel mount format YES YES YES Relay mounting possibilities DIN rail. Mounting plate. b b Mounting of front-panel mount relays RH10P-21P-99P, RHUs, RHU and RMH Mounting of relay RH197P Mounting of RM12T multiplexer Front-panel mount. RHUs, RHU and RMH details. Front-panel mount. RH10P, RH21P and RH99P detail. RM12T: DIN rail only. Front-panel mount. RH197P detail.

51 Toroid mounting possibilities On DIN rail (TA30, PA50, IA80 and MA120) using supplied accessories Accessory. On a plate (TA30, PA50, IA80, MA120, SA200, GA300, GOA and POA) or bracket Screws not supplied Screw Ø4 Screw Ø5 Clipped on the back of the relay (TA30 and PA50) Tied to cables (IA80, MA120, SA200 and GA300), cable-ties not supplied Cable-ties with 9 mm maximum width and 1.5 mm maximum thickness Tied to cables (rectangular sensors) On bars with chocks (rectangular sensors)

52 Product, terminal or screw Cable type Terminal capacity (mm 2 ) Conduct. size Stripping Tightening torque Rigid Flexible Flexible with ferrule AWG min. max. min. max. min. max. (mm) (inch) (N.m) (In-lbs) RH10M,RH21M and RH99M 11, 14 31, 32, 34 A1, A2 T1, T2 25, 26, 27 RH197M A1, A2 31, 32, , T1, T2 41, 42, 44 RH10P, RH21P, RH99P 11, 14 or 41, 44 31, 32, 34 A1, A2 T1, T2 25, 26, 27 RH197P 11, 14 31, 32, 34 A1, A2 T1, T2 25, 26, 27 RHUs and RHU A1, A2 11, 14 31, 32, 34 41, 44 T1, T2 25, 26, 27 Bus (1) 24 V, 0 V -, + RMH A1, A2 11, 14 31, 32, 34 41, 44 21, 22 23, 24 Bus 24 V, 0 V -, + RM12T 12 toroid connections 1 to 12 and 15 to 20 21, 22 23, 24 25, 26 Toroid and sensors TA30 and PA50 Ø 30 to 50 mm connectors supplied IA80 to GA300 Ø 80 to 300 mm POA - GOA Ø 5 mm round lugs not supplied: S1, S2 Shunt Tightening of 2 half-toroids Mounting on a mounting plate Rectangular sensors M1, M2 (1) RHU only.

53 Connection of relays Multi 9 format Vigirex (1) See table page B-6. Front-panel mount format Connection of toroids TA30 and PA50 closed toroids (connectors supplied) IA80, MA120, SA200 and GA300 closed toroids (1) See table page B-6. (1) See table page B-6.

54 Connection of toroids (cont.) POA and GOA split toroids (Ø 5 mm round lugs not supplied) (2) Depending on the lug. Connection of rectangular sensors and conductor layout Frame 280 x 115 mm Frame 470 x 160 mm (1) See table page B-6. 2 bars 50 x 10 mm (1600 A) The neutral can be located on the right or the left. 4 bars 100 x 5 mm (3200 A) The neutral can be located on the right or the left. (1) See table page B-6. 2 bars 100 x 5 mm (1600 A) The neutral can be located on the right or the left. 4 bars 125 x 5 mm (3200 A). The neutral can be located on the right or the left. (1) See table page B-6. 4 cables 240 mm 2 (1600 A) Note: connect M1 and M2 with Vigirex.

55 Cable layout Centre the cables within the toroid toroid Ø u 2 x total cable Ø Do not bend cables near the toroids Single-phase or three-phase loads with several cables per phase 1 cable per phase. Several cables per phase. Do not bend cables near the sensors Selection of toroids according to circuit power 3P + N copper cables Rated operational current (Ie) Max. cross-section/phase Toroids Do not bend bars near the sensors Note: Y u 25 cm for 280 x 115 mm sensor. Note: Y u 30 cm for 470 x 160 mm sensor. Selection of rectangular sensors according to circuit power 3P + N copper bars Rated operational current (Ie) Max. cross-section/phase Sensors

56 Immunisation with respect to false zero-sequence currents (tested at 6 In as per IEC annex M) The addition of a shielding ring prevents nuisance tripping with TA30, PA50, IA80 and MA120 toroids for the settings indicated in table below For circuits with high transient currents (6 In) Sensor In Maximum cross-section per phase I n With shielding ring Without shielding ring Connection between Vigrex relays and sensors Vigirex relays must be connected to the sensors as indicated: Cross-section (Cu) Maximum length Toroids (1) (1) (1) (1) Rectangular sensors (1) Wire size for resistance R maximum = 3. Cable type In highly disturbed environments: Wiring Auxiliary power supply via external transformer.

57 Functions and characteristics A-1 Installation recommendations B-1 Dimensions C-2 Wiring diagrams D-1 Additional characteristics E-1 Catalogue numbers F-1

58 Mounting on a DIN rail RH10M, RH21M and RH99M RH197M Mounting on a mounting plate Plate drilling layout Door cutout Mounting on a DIN rail Mounting on a mounting plate (1) For IP4 requirements.

59 Front-panel mount relays (cutout complying with standard DIN 43700) RH10P, RH21P and RH99P RH197P RHUs, RHU and RMH Door cutout DIN rail mounting only RM12T Door cutout (1) For IP4 requirements.

60 TA30 and PA50 toroids Secured to the back of the relay Type ØA B C D E F G H J K TA30 PA50 IA80, MA120, SA200 and GA300 toroids IA80 and MA120 SA200 and GA300 Type ØA B C D E F G H J K IA80 MA120 SA200 GA300

61 POA and GOA toroids Type Dimensions (mm) Tightening torque (N.m/Ib-in) ØA ØB C D E F T1 T2 T3 POA GOA Rectangular sensors Frame 280 x 115 mm Frame 470 x 160 mm

62 TOOLS p p p p p

63 Functions and characteristics A-1 Installation recommendations B-1 Dimensions and connection C-1 Wiring diagrams D-2 Additional characteristics E-1 Catalogue numbers F-1

64 RH10M, RH21M and RH99M wiring with MX shunt release See page D-11 L 1 : lamp MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A circuit breaker, curve C or D RH10M, RH21M and RH99M: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n u 500 ma) b 11-14: voltage-presence contact b 26-25: relay test b 27-25: fault reset b : fault contact Note: for the RH99 earth leakage monitor use the fault contact 31, 32, 34. RH10P, RH21P and RH99P wiring with MX shunt release L 1 : lamp MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A circuit breaker, curve C or D RH10P, RH21P and RH99P: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n u 500 ma) b 11-14: voltage-presence contact b 26-25: relay test b 27-25: fault reset b : fault contact. See page D-11 Note: for the RH99 earth leakage monitor use the fault contact 31, 32, 34.

65 RH10M, RH21M and RH99M wiring with MN undervoltage release See page D-11 MN: undervoltage release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A circuit breaker, curve C or D RH10M, RH21M and RH99M: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n u 500 ma) b 11-14: voltage-presence contact b 26-25: relay test b 27-25: fault reset b : fault contact. Note: for the RH99 earth leakage monitor use the fault contact 31, 32, 34. RH10P, RH21P and RH99P wiring with MN undervoltage release MN: undervoltage release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A circuit breaker, curve C or D RH10MP, RH21P and RH99P: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n u 500 ma) b 11-14: voltage-presence contact b 26-25: relay test b 27-25: fault reset b : fault contact See page D-11 Note: for the RH99 earth leakage monitor, use the fault contact 31, 32, 34.

66 RH99M monitor wiring with ATm auto-reclosing controller See page D-11 ATm3: auto-reclosing controller H: red light MT: motor mechanism module MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : 1 A circuit breaker, curve C or D Q 3 to Q 5 : DPN circuit breakers RH99M monitor: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n u 500 ma) b 11-14: voltage-presence contact b 26-25: relay test b 27-25: fault reset b : fault contact S 1 et S 2 : single-pole switch SD: auxiliary fault indication contact T: sensor. RH99P monitor wiring with ATm auto-reclosing controller ATm3: auto-reclosing controller H: red light MT: motor mechanism module MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : 1 A circuit breaker, curve C or D Q 3 to Q 5 : DPN circuit breakers RH99P monitor: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n u 500 ma) b 11-14: voltage-presence contact b 26-25: relay test b 27-25: fault reset b : fault contact S 1 et S 2 : single-pole switch SD: auxiliary fault indication contact T: sensor. See page D-11 Additional information b b b

67 RH197M wiring for optimum continuity of service See page D-11 Switch setting: L1: lamp and audio alarm MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A DPN circuit breaker, curve C or D RH197M: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n y 500 ma) b 41-44: alarm contact b 26-25: relay test b 27-25: fault reset b : fault contact RH197M wiring for optimum safety Switch setting: See page D-11 Warning L1: lamp and audio alarm MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A DPN circuit breaker, curve C or D. RH197M: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n y 500 ma) b 41-44: alarm contact b 26-25: relay test b 27-25: fault reset b : fault contact

68 RH197M wiring for optimum continuity of service See page D-11 Switch setting: L1: lamp and audio alarm MN: undervoltage release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A circuit breaker, curve C or D. RH197M: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n < 500 ma) b 41-44: alarm contact b 26-25: relay test b 27-25: fault reset b : fault contact RH197M wiring for optimum safety Switch setting: See page D-11 L1: lamp and audio alarm MN: undervoltage release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A circuit breaker, curve C or D. RH197M: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n y 500 ma) b 41-44: alarm contact b 26-25: relay test b 27-25: fault reset b : fault contact

69 RH197P wiring for optimum continuity of service Switch setting: See page D-11 L1: lamp and audio alarm MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A DPN circuit breaker, curve C or D RH197P: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n y 500 ma) b 41-44: alarm contact b 26-25: relay test b 27-25: fault reset b : fault contact RH197P wiring for optimum safety Switch setting: Warning See page D-11 L1: lamp and audio alarm MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A DPN circuit breaker, curve C or D. RH197P: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n y 500 ma) b 41-44: alarm contact b 26-25: relay test b 27-25: fault reset b : fault contact

70 RH197P wiring for optimum continuity of service Switch setting: See page D-11 L1: lamp and audio alarm MN: undervoltage release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A circuit breaker, curve C or D. RH197P: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n < 500 ma) b 41-44: alarm contact b 26-25: relay test b 27-25: fault reset b : fault contact RH197P wiring for optimum safety Switch setting: L1: lamp and audio alarm MN: undervoltage release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A circuit breaker, curve C or D. RH197P: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n y 500 ma) b 41-44: alarm contact b 26-25: relay test b 27-25: fault reset b : fault contact See page D-11

71 RHUs and RHU wiring with MX shunt release: optimum continuity of service See page D-11 L 1 : lamp and audio alarm L 2 : lamp MX: shunt release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A DPN circuit breaker, curve C or D RHUs and RHU: b A 1 -A 2 : auxiliary power supply b T1-T2: A or OA type toroid or rectangular sensor (if I n u 0.5 A) b 11-14: voltage-presence contact b 26-25: relay test b 27-25: fault reset b : fault contact b 41-44: alarm contact b 24 V, 0 V, -, +: RHU internal communication bus (1) RHU only. RHUs and RHU wiring with MN undervoltage release: optimum safety L 1 : amp and audio alarm MN: undervoltage release Q 1 : circuit breaker protecting the main circuit Q 2 : DPN circuit breaker Q 3 : 1 A DPN circuit breaker, curve C or D RHUs and RHU: b A 1 -A 2 : auxiliary power supply b T 1 -T 2 : A or OA type toroid or rectangular sensor (if I n u 0.5 A) b 11-14: voltage-presence contact b 26-25: relay test b 27-25: fault reset b : fault contact b 41-44: alarm contact b 24 V, 0 V, -, +: RHU internal communication bus See page D-11 (1) RHU only.

72 RMH wiring with RM12T multiplexer L 1, L 2 : lamp and audio alarm L 3 : lamp Q A : switchboard incoming circuit breaker for the main circuit Q B : circuit breaker protecting the RMH and RM12T power supply circuit Q 1 to Q 12 : circuit breakers on main outgoing circuits 1 to 12 T: u 4 VA T 1 to T 12 : earth leakage current measurement toroids for circuits 1 to 12 (or rectangular sensor if I n u 0.5 A). RM12T multiplexer b terminals 1 to 12 and 15 to 20: connection of toroids b terminals 21 to 24: connection of RMH earth leakage monitor b terminals 25 to 26: auxiliary power supply. RMH earth leakage monitor b A 1 -A 2 : auxiliary power supply b 11-14: voltage-presence contact b 21 to 24: connection of RM12T multiplexer b : alarm contact b 41-44: pre-alarm contact b 24 V, 0 V, -, + : internal communication bus.

73 Connection between Vigirex RHU or RMH and the communication bus Internal bus Connection of test and remote reset functions. Cable Contacts Connection of RH10, RH21, RH99, RH197, RHUs and RHU power supply (1) RH10, RH21 and RH99. (2) RH197. T : class 2 isolation transformer mandatory: b for V A1,A2 y 24 V AC for RH10, RH21 and RH99 b for V A1,A2 = 48 V AC for RH197P The DC power supply must be galvanically isolated from the AC power system.

74 TOOLS p p p p p

75 Functions and characteristics A-1 Installation recommendations B-1 Dimensions and connection C-1 Wiring diagrams D-1 Protection using Vigirex RCDs E-4 Vigirex devices E-14 Leakage-current monitoring using RCDs E-37 Catalogue numbers F-1

76 Earth Earth electrode Earth-fault current: Earthing resistance or in fact the overall earthing resistance : Earth-leakage current Equipotential bonding Exposed conductive part Intentional leakage current Isolated system: Natural leakage current Protective conductor Residual current Zero volt

77 Acronym/ Acronym/ French English DDR RCD DPCC SCPD dv/dt IGBT IGBT IT IT Filtre RFI RFI SLT System earthing arrangement TN TN TN-C TN-C TN-C-S TN-C-S TN-S TN-S TT TT CEM / EM EMC / EM GFP GFP NEC NEC THDI THDI RMS

78 IEC standard Importance of the amperage 0.5 ma b Zone ma b Zone 2 b Zone 3 b c 1 b - 10 ma c 1-30 ma b Zone 4 c 1 v c 1 c 2 v c 2 c 3 v c 3

79 Importance of the current frequency Current thresholds depending on the frequency Frequency (Hz) Perception (ma) Let-go (ma) Fibrillation (ma) Installation standard IEC Touch voltage/ disconnecting time b v currentexposure time touch voltagecontact time v b v b v v Maximum disconnecting time of protection device(s) (according to table 41A of standard IEC 60364) Ph-N voltage (V) AC current DC current y y y y

80 Type of contact b Direct contact Direct contact. Comparison between 10 ma and 30 ma sensitivities Comparison between 10 ma and 30 ma. b Indirect contact Indirect contact.

81 automatically interrupting the supply, the installation standards propose various system earthing arrangements. For further information, see the Cahiers Techniques documents 172, 173 and 178. b b b TT system. TT system. b b Characteristics b b b Using RCDs b RCD threshold settings (see section in standard IEC 60364) y v v Maximum resistance of the earth electrode as a function of the rated residual operating current for the RCD RCD rated residual operating current Maximum resistance of the earth (I n) electrode ( ) Low sensitivity Medium sensitivity High sensitivity y Note: if the earthing resistance is > 500, the RCD is set to 30 ma. b RCD time delays Maximum disconnecting time of protection device(s) (according to table 41A extract of standard IEC 60364) SLT TT Ph-N voltage (V) AC current DC current y y y

82 TN-S diagram. TN system b b v v Characteristics b b Using RCDs (only for TN-S) Maximum disconnecting time of protection device(s) (according to table 41A of standard IEC 60364) SLT TN Ph-N voltage (V) AC current DC current y y y TN-C diagram. b RCD threshold settings v y Note: there are no setting constraints, even if the loop impedance is high (it rarely exceeds one tenth of an ohm). As a result, it is rarely necessary to set the current under 1000 A. This operating principle for RCDs is similar to that imposed by the NEC, called Ground Fault page E-11), because the goal is in fact to control, in the TN-S system, the impedance of the fault loop (see the expert guide no. 2 GFP). v y b RCD time delays

83 IT system. IT system b v v b v v Characteristics b b b Using RCDs b Note: the 1 st fault current can reach 1 A depending on the size of the distribution system (see Cahier Technique document 178).

84 eliminated by a 300 ma RCD. Analysis of the risk b v v b v u Tests have shown that a very low insulation-fault current (a few ma) can develop and, starting at v

85 Installation standards b v v b b b Note: GFP protection, for thresholds up to 250 A, can be provided by Vigirex RCDs. Poorly managed fault loop in a NEC system.

86 Earth-leakage current Cable leakage capacitance natural leakage current Continuous leakage current due to stray capacitances of conductors (dotted lines). Load leakage capacitance intentional leakage current Note: Capacitances between live conductors and earth. Note: Leakage capacitance / approximate values Component Differential-mode capacitance Common-mode capacitance

87 The environment and the loads of a low-voltage electrical distribution system generate three major types of disturbances that impact on the earth-leakage currents in the system. b Overvoltages Residual current following operation of a switch. Example of a common-mode disturbance. Overvoltages / approximate values Type Amplitude (xun) or kv Duration Frequency or rise time y (1) (1) Depending on the position in the installation. b Harmonic currents Harmonic spectrum of the current. b Waveform of the fault currents Consequences for use of RCDs The RCD must not react to these leakage currents when they are not dangerous.

88 b b RCD operating principle. RCD sensitivity levels Sensitivity depending on the different needs High sensitivity Medium sensitivity Low sensitivity RCD operating / non-operating current v not operatey v operateu

89 Measurement of residual currents b v v b v v

90 Toroid characteristics b b b Measurement of zero-sequence currents b Measurement dynamics v v v n b Measurement limits Table indicating the limits for I n / rated current Note: strict compliance with the installation rules for the cables passing through the toroid is indispensable. operational current. Measurement of disturbed currents Toroid hysterisis cycle for type A measurements. Id: primary current Im = Id - Ih

91 Vigirex with TA 30, PA 50, IA 80, MA120 toroids combined with a Schneider Electric brand circuit breaker, rated y 630 A Short-circuit withstand capacity b b b Note: the requested characteristics are required for an RCD-circuit breaker combination. For an RCD-switch combination, more in-depth study is required if the fault current that must be interrupted is greater than 6 In (where In is the switch rating). For the Vigirex range, Schneider guarantees practical values, consistent with the characteristics of the monitored circuits and the protection circuit breakers. Vigirex with SA 200 and GA 300 toroids combined with a Compact NS630b to 3200 A or a Masterpact NT or NW circuit breaker up to 6300 A Overvoltage withstand capacity b Rated installation voltage Position b Sensors Supply (for Us > 48 V) Relay output contacts

92 Characteristics of measurement relays: immunity to natural leakage currents b b Filtering of harmonic frequencies b v Flow of leakage currents in a frequency converter. b v v

93 Rms measurements b b Standardised RCD response curve as per the table. Leakage-current curve for switching in of a load with leakage capacitance. Curve I n / non-delayed relay times Key: Time Tps: total time required to break the current (including the time for the associated protection device to open) If: leakage current I n: residual operating current setting Vigirex Schneider Electric guarantees all the above break times for a Vigirex combined with its circuit breakers rated up to y 630 A, particularly when set to 30 ma. Guaranteed non-operation up to 0.8 I n

94 Characteristics of measurement relays: measurement of disturbed currents containing DC components Fault on the DC bus of a converter. monitored b AC type: b A type: b B type: Waveforms of the test currents for A-type RCDs.

95 Selection of industrial RCDs Summary table Type of circuit Application Diagram Suitable type of RCD Protection Against indirect contact Against direct contact u u u u (1) (1) The insulation fault is equivalent to a short-circuit. Tripping should normally be ensured by the short-circuit protection, but use of an RCD is recommended if there is any risk the overcurrent protection will not operate.

96 Characteristics of the relay / toroid combination: measurement integrity Vigirex wired for optimum safety. Description of phenomena Test standard Standardised tests as per IEC annex M Title Code Vigirex tests 15 kv in air 12 V /m (1) 4 kv between line and earth 4 kv between lines 2 kv between line and earth 1 kv between lines (1) V AC < 48 V, the Vigirex does not have a supply transformer. -

97 Voltage-dip withstand capacity b v v

98 Continuity of service: RCD device discrimination Standardised characteristics of time-delay type RCDs b RCD with a time delay y 0.06 s v non-operating time v operating time v total time Key: Time Tps: total time required to break the current If: leakage current I n: residual operating current setting. Note: if the threshold is set to < 30 ma, the relay must operate immediately. b RCD with time delay > 0.06 s v non-operating times v operating time v total time I n (A): residual operating-current setting (the relay operates for a fault current u I n). Schneider Electric guarantees non-operation for all fault currents < 0.8 I n. t (s): minimum non-operating time. Vigirex RCDs b Minimum non-operating time: b Operating time / total time: Implementing discrimination current time type. b b b double b u u

99 Note: an RCD does not limit the fault current and for this reason, current discrimination alone Vigirex discrimination rules System Setting (Schneider Electric breaking device + RCD) Upstream Downstream Ratio I n Time delay (1) (1) (1) A difference of two settings is required for the 0.25 s setting (i.e. the 0.5 s and the 0.25 s settings). Schneider Electric guarantees the coordination of a Vigirex RCD / Compact NSX circuit-breaker combination with all other RCDs as long as the general Settings ensuring discrimination between two Vigirex devices. Example of settings for discrimination: I n = 0.1 A / t = 1 s RH99I n = 0.03 A / t = 0.8 s Summary of RCD settings depending on the system earthing arrangement RCD tripping/immunity depending on the load and the system earthing arrangement System earthing TT TN-S TN-C IT (1 st fault) IT (2 nd fault) arrangement Protection of persons RCD Circuit breaker Circuit breaker 1 st fault not necessary y (1) RCD RCD RCD RCD hazards (1) See table page E-5.

100 Special protection b b b Additional information on RCD protection of persons TT system with multiple earth electrodes Setting of RCD at the head (where applicable) y IT system 2 nd fault, neutral protection

101 Protection of property Protection of loads b RCD threshold settings b RCD time delays Motor applications Protection of parallel-connected generators b b b v v b RCD threshold settings RCD time delays

102 Example of protection using RCDs Distribution diagram with discrimination. b b b

103 Requirements of standards Protection against indirect contact b operating current threshold Note: even though the earthing resistance of the main LV switchboard is 1, the RCD at the head of the installation must protect against faults occurring downstream whatever their position and the greatest earth resistance must therefore be considered, i.e. 10 (see page E-26) b non-operating time (time delay) Protection against direct contact Protection implementation Taking leakage currents into account b b Taking discrimination into account b Current-based discrimination v v b Time-based discrimination b Check I n < 5 A and t < 1 s Note 1: with RCDs from the Vigirex, Vigicompact and Multi 9 or Acti 9 range, the maximum time delay is 1 s; the Note 2:

104 Single-source diagram RCD at the head of an installation b b Installation of the Vigirex measurement toroid at the head of an installation. Advantages Disadvantages Comments Rectangular sensor Measurement toroid on earthing conductor Note: installation. Multi-source diagram with TT system b b Each source has a separate earth electrode b The two sources are never coupled The two sources are never coupled. b The two sources may be coupled Note: in the event of a fault, even when the sources are not coupled, the two protection devices trip. There is no discrimination in clearing the faulty source. This system downgrades the continuity of service. The two sources may be coupled.

105 The sources are connected to the same earth electrode b The two sources are never coupled The two sources are never coupled. b The two sources may be coupled The two sources may be coupled. IMPORTANT Coupling may be carried out by a source coupling device (the most frequent case), particularly when there is a DC bus downstream. Coupling via the load and DC bus. Multi-source diagram with TN system Multi-source diagram with TN system.

106 Magnetic ring for conductors. Recommendations for toroid installation b b b b v v v Rated operational current of the sensors b b Selection of toroids and rectangular sensors depending on the power circuit b b

107 Disturbed environments b b b b

108 Combinations of RCDs It is possible to combine different types of RCDs (type AC, A and B)? Possible combinations of RCD types Optimised solutions for type B fault RCD1 type RCD2 type (1) Type of fault (1) Capable of handling the fault. Technical comments Solutions b b Implementation examples. Note: if an isolating transformer is used, discrimination between RCD1 and RCD2 is of course excellent.

109 RCD-device settings in installations with high leakage currents TT system b Maximum current setting I n1 b Minimum current setting I n2 Note: (temperature, auxiliary-source voltage, etc.), Vigirex can be used with a guaranteed nonoperating threshold of 0.8 I n. The minimum setting for a Vigirex devices can be as low as I I 0.8, i.e x I I. b Table for leakage currents Electrical equipment Computer equipment as per standard IEC Measured leakage current (ma) Maximum leakage current (ma) b b v v v

110 IT system b Table for leakage currents depending on system capacitance System leakage capacitance ( F) 1 st fault current (A) Note: 1 F is the typical leakage capacitance of 1 km of four-core cable. Distribution system in a factory with a TNS segment for the management IT system. IMD: insulation-monitoring device.

111 b b b b Monitoring the neutral conductor in TN-S systems b Safety of life and property b Power quality Insulation fault on the neutral conductor. The system is TN-C upstream of A. Tolerance for an insulation fault on the neutral conductor depending on the system earthing arrangement TN-C TN-S TT IT

112 Consequences of an isolation fault on the neutral conductor b b Note: the currents in the exposed conductive parts are zero-sequence currents, i.e. with distance of one meter disturbs the screen of a PC. b Effects of a fault on the neutral conductor in the TN-S system. b b These new constraints require the use of a device to monitor the zerosequence currents.

113 Measurement of leakage currents b Management of leakage currents b Table for leakage currents Electrical equipment Computer equipment as per standard IEC Measured leakage current (ma) Maximum leakage current (ma) (1) (2) (1) A-type equipment: equipment intended for connection to the electrical installation of building via a non-industrial outlet, a non-industrial connector or both. (2) B-type equipment: equipment intended for connection to the electrical installation of building via an industrial outlet, an industrial connector or both in compliance with standard IEC or similar national standards.

114 RHUs and RHU application diagram Small distribution systems Selection table Products Part no (1) (2) New. Renovation. (2) In this case, the diameter of the toroid is generally much smaller than (1). Setting Installation b Small distribution systems. b

115 RMH application diagram Computer rooms Selection table Products Part no (1) (2) New. Renovation. (2) In this case, the diameter of the toroid is generally much smaller than (1). Setting b b Computer room.

116 PC network Selection table Products Part no (1) (2) New Renovation (2) In this case, the diameter of the toroid is generally much smaller than (1). b b b PC network.

117 Instantaneous relay, I n setting = 30 ma Instantaneous relay, I n setting > 30 ma Non-operating time. Total break time. Operating time. Delayed relay for I n > 30 ma Example

118 Instantaneous relay, I n setting = 30 ma Instantaneous relay, I n setting > 30 ma Non-operating time. Total break time. Operating time. Delayed relay for I n > 30 ma Example

119 Instantaneous relay, I n setting = 30 ma Instantaneous relay, I n setting > 30 ma Non-operating time. Total break time. Operating time. Delayed relay for I n > 30 ma Example

120 Instantaneous relay, I n setting = 30 ma Instantaneous relay, I n setting > 30 ma Non-operating time. Total break time. Operating time. Delayed relay for I n > 30 ma

121 Functions and characteristics A-1 Installation recommendations B-1 Dimensions and connection C-1 Wiring diagrams D-1 Additional characteristics E-1 Residual-current protection relays F-2 Residual-current protection relays or monitoring relays F-4 Toroids and rectangular sensors, communication module F-5

122 RH10 with local manual fault reset y RH10M RH10P Sensitivity 0.03 A - instantaneous Sensitivity 0.05 A - instantaneous Sensitivity 0.1 A - instantaneous Sensitivity 0.25 A - instantaneous Sensitivity 0.3 A - instantaneous Sensitivity 0.5 A - instantaneous Sensitivity 1 A - instantaneous

123 RH21 with local manual fault reset y RH21M RH21P Sensitivity 0.03 A - instantaneous Sensitivity 0.3 A - instantaneous or with 0.06 s time delay RH99 with local manual fault reset y RH99M RH99P Sensitivity 0.03 A to 30 A - instantaneous or with 0 to 4.5 s time delay RH197 with local manual or automatic fault reset (1) y RH197M RH197P Alarm: 50 % of fault threshold - instantaneous Fault: sensitivity 0.03 A to 30 A - instantaneous or with 0 to 4.5 s time delay (2) (2) (2) Alarm: 100 % of fault threshold - instantaneous Fault: sensitivity 0.03 A to 30 A - instantaneous or with 0 to 4.5 s time delay (2) (2) (2) (1) Selected via a switch. (2) RH197M: 110 V, 230 V, 400 V.

124 Residual-current protection relays RHUs with local manual fault reset y RHUs Alarm: sensitivity A to 30 A - instantaneous or with 0 to 4.5 s time delay Fault: sensitivity 0.03 A to 30 A - instantaneous or with 0 to 4.5 s time delay RHU with local manual fault reset (communicating) y RHU Monitoring relays RH99 with automatic fault reset y RH99M RH99P Sensitivity 0.03 A - instantaneous Sensitivity 0.1 A to 30 A - instantaneous or with 0 s to 4.5 s time delay RMH and multiplexer RM12T (communicating) y RM12T RMH Alarm: sensitivity A to 30 A - instantaneous or with 0 to 4.5 s time delay Fault: sensitivity 0.03 A to 30 A - instantaneous or with 0 to 4.5 s time delay Pre-Alarm: sensitivity A to 30 A - instantaneous or with 0 to 5 s time delay Alarm: sensitivity 0.03 A to 30 A - instantaneous or with 0 to 5 s time delay

125 DC150 OK error N1 N2 N BBus com. 24V JBus N N2 15 com. error 13 Sensors Closed toroids, A-type Type Ie (A) Inside diameter (mm) rated operational current Accessory for closed toroids Split toroids, OA-type Type Ie (A) Inside diameter (mm) rated operational current Rectangular sensors Inside dimensions (mm) Ie (A) Communication module Note: sensor-relay link: twisted cable not supplied (see Installation and connection chapter).

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