M.7. index. Current transformers and shunts. Page. Introduction 3 TC 5 TC 5,2 TC 6,2 TC 6 TC 8 TC 10 TC 12. Slim line current transformers 7

Transcription

1 Current transformers and shunts M 7 M.7.02 GB

2 index Introdution 3 TC TCH TC 5 TC 5,2 TC 6,2 TC 6 TC 8 TC 10 TC 12 TCH 6,2 TCH 6 TCH 8 TCH 10 TCH 12 Page Slim line urrent transformers 7 High auray, slim line urrent transformers 8 T TP TI TC SHUNTS T 400 T 0 T 600 TP 23 TP 58 TP 88 TP 812 TP 816 TM 45 T 210 TW 25 TW 25m TI 420 TP 420 TCM 420 TCB 420 TC 420 TC 020 TRM TRP TRMC SHP SHB SH Current transformers 9 Shared ore urrent transformers 10 Primary oil, DIN rail, urrent transformers 11 Current transformers with m output 12 Current transformers with built in onverter 13 Current measurement and protetion transformers 14 Shunts 15 TSR TSR dding transformers 15 essories 16 Dimensions 17 M7-2

3 Introdution When eletriity was fi rst generated it reated a need for urrent transformers (CT) used to measure eletriity. In this atalogue we will identify all our CT. Current transformers are used: To identify and seperate individual iruit(s) for measuring / proteting equipment onneted to high voltage lines. To help identify / prevent high urrent transmissions. To redue short iruit urrents down to permissible levels, in sensitive measuring and protetion equipment. To produe proportional seondary signals (0-5 / 4-20 m) to over a given primary range ( ) whih is then onneted to the appropriate measuring / protetion devie. NOTE: Experiene has shown that through improper seletion / installation of measurement / protetion transformers it may reate situations where the devie may not operate properly as well as a ompromise personnel safety during ritial periods. Seletion To orretly selet the measurement transformer (measurement or protetion) the following information must be verifi ed: The appliation for whih it is intended (measurement or protetion) Features of the operating environment, or onditions of use (indoors or outdoors, maximum operating temperature, et.) The speifi ation of the wire(s) that the CT will be installed around: Size of ables or buss bar Primary urrent range to inlude maximum and minimum urrent to be measured Perentage of overload, range and time (if appliable) System voltage (low, medium or high) Short iruit urrent System frequeny Speifi ation of the measurement / protetion devie assoiated with the CT to inlude auray, nominal urrent, onsumption, et. Distane between the transformer and the devie, plus the able diameter used to onnet the CT to the devie The power of a transformer Important Note: In the transformer,the primary urrent has to generate (indue) the power required for the seondary side to transmit the seondary urrent to the measurement devie. Indued power has to be equal to or greater than the losses in the line plus onsumption of the measurement devie itself. Losses in the line, P L : This is the power lost, through heat, generated by the passage of urrent through the resistane R L in the ables, in the transformer s seondary iruit. Fators to be taken into aount: Seondary urrent. P L = R L I 2 Cable diameter. R L is inversely proportional to the square of the diameter Cable length. R L is proportional to the length of abling (there and bak) Power: The nominal apparent power (V ) with a speifi ed power fator, whih the urrent transformer supplies, to the seondary urrent with the assigned 2 urrent when it is onneted to its nominal load, S(V ) = Z I s ording to Standards, for apparent power greater than or equal to 5 V, the power fator is 0.8 indutive. For apparent power less then 5 V the power fator is onsidered to be one (unity). M7-3

4 Losses in a transformer TRNSF. INSTLLTION l (m) Example: Suppose a urrent transformer was onneted to an ammeter 10 m away. What would be the loss at.../5? What would be the loss at.../1? Data: L CBLE = 2 L = 2 10 = 20 m S CBLE = 1 mm 2 R LINE = 0, / 1 = 0,35 Ω P LINE = 0, = 8,62 V - If it was.../ 1 P LINE = 0, = 0,35 V (25 times less) I p P1 P2 Line impedane I S S1 R L S2 R L = ρ ρ = 0,0172 L s Ω mm 2 m Cable material: opper EQUIPMENT TYPICL CONSUMPTION Moving iron instruments Moving oil instruments nalogue wattmeters Maximum Demand Indiators Digital instruments Energy meters Reording instruments 0, V 0,5 V 0,2... 2,5 V 2,5... 5,0 V 0,5... 1,0 V 1,0... 1,5 V 2,0... 5,0 V Table of losses in the seondary line V Length of seondary line Note: With.../1 transformers losses are redued 25 times M7-4

5 uray of a transformer The perentage of error, produed in a transformer, is established by IEC In measurement transformers: 25 % and 100 % of nominal power. In protetion transformers: 100 % of nominal power. Error Limits. Table 1. uray lasses n TYPE Minutes Centiradians ± % Error for % I Phase differene ± for % I n ,1 0,40 0,20 0,10 0, ,45 0,24 0,15 0,15 0,2 0,75 0,35 0,20 0, ,9 0,45 0,30 0,30 0,5 1, 0,75 0, 0, ,7 1,35 0,90 0,90 1,0 3,00 1, 1,00 1, ,4 2, 1,80 1,80 Error limits. Table 2. uray lasses n TYPE Minutes Centiradians ± % Error for % I Phase differene ± for % I n S 0,75 0,35 0,20 0,20 0, ,90 0,45 0,30 0,30 0,30 0.5S 1, 0,75 0, 0, 0, , 1,35 0,90 0,90 0,90 Error limits. Table 3. uray lasses uray lass ± % Error for % I n % I n No. phase error For protetion transformers Phase differene ± for % I n TYPE ± % Error for % I n Minutes Centiradians Composite error 5P ,8 5 10P M7-5

6 The transformer when saturated urrent transformer is saturated when the primary urrent, passing through the CT, is greater then the nominal rating of the CT. The linearity of urrent transformation, between the primary and seondary sides dereases, so error inreases. The saturation of the transformer is inversely proportional to the load (Fig. 6). The differene between measurement and protetion urrent transformers is their behavior when an overload ours on the primary side. CT used for measurement are saturated when there is a primary urrent overload. In order to protet the equipment, on the seondary side, Protetion transformers do not saturate until there is a very high urrent on the primary side. Class 5P15 protetion transformer indiates that it has an auray rating of ± 1% and that it does not beome saturated until the primary urrent reahes 15 times the nominal urrent rating of the CT. In measurement transformers, the SFETY FCTOR Fs parameter indiates the exessive amperage on the primary side urrent in relation to the urrent sent to the measuring devie on the sondary side. TP Fig. 6 CLSS CURVES B C % 0 1,2 5 x I pn Current error 1 3 Measurement transformer 0,5 10P5 5P5 Protetion transformer M7-6

7 TC SLIM LINE urrent transformers. BERG Series Type TC 5 TC 5,2 TC 6,2 TC 6 TC 8 TC 10 TC 12 Inner Ø Flat strip 25 x 5 a b b Mounting a x x x x x x 12 80, , ,5 x 60 x x x 100 x 10 V Class Class Class Class Class Class Class 0, , , , , , , / ,5 / /5-1,25 3,5 75/5-2 3,5 100/5 1,5 2,5 3,75 1,75 3,75 7,5 125/5 1,75 3,5 5-1,5 2 3,75 7,5 10 1/5 2,5 3, ,5 5 7, , /5 3, ,5 3 3,5 7, ,5 5 7,5 2/5 5 7,5 7,5 3,5 3,75 5 7, , /5 3,5 3, , /5 3,5 5 7, , ,5 10 0/5 5 7, , , /5 5 7, , / / / / / / / / / / Frequeny ssigned insulation voltage Short-iruit thermal urrent, I th Dynami urrent, I dyn Features Hz 10 kv a.. 60 I n 2,5 I th Higher voltage for the material 0,72 kv a Thermal lass B (130 ºC) Enapsulated in selfextinguishing plasti VO Safety fator, Fs 5 Sealed seondary terminals Yes essories 5 TC 5 TC 5.2 TC 6.2 TC 6 40/5 M311 /5 M312 60/5 M313 75/5 M /5 M315 M /5 M316 M322 M342 1/5 M317 M323 M343 M /5 M318 M324 M344 M332 2/5 M319 M325 M345 M /5 M326 M346 M334 Code table TC 5.2 TC 6.2 TC 6 TC 8 TC 10 TC /5 M327 M347 M335 M361 0/5 M328 M348 M336 M /5 M329 M349 M337 M363 7/5 M338 M /5 M339 M /5 M366 M /5 M367 M374 10/5 M368 M375 M /5 M369 M376 M /5 M377 M385 20/5 M378 M /5 M379 M /5 M388 DIN rail P-TC / WG Code P19921 Terminals over Code M79951 Certifiate M7-7

8 TCH SLIM LINE urrent transformers. HIGHLY CCURTE Type TCH 6.2 TCH 6 TCH 8 TCH 10 TCH 12 Inner Ø Flat strip 30 x x x 12 b a a b 80, , ,5 x 60 x x x 100 x10 V Class Class Class Class Class 0,2S 0,2 0,5S 0,2S 0,2 0,5S 0,2S 0,2 0,5S 0,2S 0,2 0,5S 0,2S 0,2 0,5S 100/5 1 1,5 2,5 1/5 2,5 3,5 3,5 1 1,25 1,5 200/5 3, ,25 1,5 2 2/ ,5 1,75 2,25 300/ ,75 2 2,5 400/5 7,5 7,5 7, /5 5 7,5 7,5 600/5 5 7,5 7, /5 7, , /5 7, , / , / / / / / / / Frequeny ssigned insulation voltage Short-iruit thermal urrent, I th Dynami urrent, I dyn Features...60 Hz 10 kv a.. 60 I n 2,5 I th Higher voltage for the material 0,72 kv a Thermal lass B (130 ºC) Enapsulated in selfextinguishing plasti VO Safety fator, Fs 5 / 10 Sealed seondary terminals Yes Code table TCH 6.2 TCH6 TCH 8 TCH 10 TCH /5 M441 1/5 M443 M /5 M444 M432 2/5 M445 M /5 M446 M /5 M447 M435 0/5 M /5 M437 M463 7/5 M438 M /5 M439 M /5 M466 M /5 M467 M /5 M468 M475 M /5 M469 M476 M /5 M477 M /5 M478 M /5 M479 M /5 M488 essories 5 DIN rail P-TC / WG Code P19921 Terminals over Code M79951 Certifiate M7-8

9 T400, T0, T600 Current transformers Type T 400 T 0 T 600 Bus bar 100 x 20 mm 100 x 30 mm 125 x 60 mm b a a b Mounting V Class Class Class 0, , , / / / / / / / / / / Frequeny ssigned insulation voltage Short-iruit thermal urrent, I th Dynami urrent, I dyn...60 Hz 3 kv a.. 60 I n 2,5 I th Higher voltage for the material 0,72 kv a Thermal lass 105 ºC Enapsulated in selfextinguishing plasti VO Safety fator, Fs < 5 Sealed seondary terminals Yes Standards Features IEC 44-1, UNE , UL 94, VDE 0414 Code table T 400 T 0 T 600 7/5 M /5 M /5 M596 M5B /5 M /5 M598 M54 M5B /5 M599 M56 M5B5 2 0/5 M57 M5B /5 M58 M5B /5 M59 M5B /5 M5B9 essories 5 DIN rail P-TC / WG Code P19921 Certifiate M7-9

10 TP TP SPLIT CORE urrent transformers Type TP-23 TP-58 TP-88 TP-812 TP816 Bus bar 20 x 30 mm x 80 mm 80 x 80 mm 80 x 120 mm 80 x 160 mm b a a b Mounting V Class Class Class Class Class 0, , , , , / ,5 1/ /5-1,5 2,5 2/ /5 1, , , /5 2, , , /5 2, , /5 2,5 5 17,5 2,5 5 17, / , / / / / / / / / / / ssigned insulation voltage ssigned short-iruit thermal urrent (I th ) ssigned dynami urrent (I dyn ) 3 kv a.. 60 I n 2,5 I th Higher voltage for the material (U m ) 0,72 kv a Thermal lass (105 0 C) Response in frequenies Lineal...60 Hz Transformation ratio, auray power and auray lass Use Casing Terminal box for the seondary Dimensions and weight Standards essories 5 Certifiate Features ording to type (.../5 or.../1 ) Inner Self extinguishing (UL94VO) Lokable ording to type IEC 44-1, UNE , UL 94, VDE 0414 TET114 (TP58) Code M79972 TET144 (TP88,812) Code M79973 Code table TP-23 TP-58 TP-88 TP-812 TP /5 M111 1/5 M /5 M113 2/5 M114 M121 M /5 M115 M122 M /5 M116 M123 M133 0/5 M124 M134 M /5 M125 M135 M142 7/5 M126 M136 M /5 M127 M137 M /5 M128 M138 M145 M /5 M /5 M /5 M148 M /5 M /5 M /5 M /5 M /5 M157 M7-10

11 TM 45, T 210 TP, TW 25, TW 25M Type TM 45 T 210 TW 25 Inner Ø Primary winding - Primary winding - Bushing bar 25 b a a b 52, Mounting V Class Class Class 0, , , /5 2, /5 2, /5 2, /5 2, /5 2, /5 2, /5 2, / / / / , / / / / / / Type TW 25 M* Inner Ø a b Mounting 100/5 125/5 1/5 200/5 2/5 300/5 V Bushing bar Class 0, * MULTI-RTIO TRNSFORMER: Measurement transformers 1, Groups 6 urrent transformers into one single transformer. Ratio is seleted aording to the terminal onnetions on the seondary side Frequeny ssigned insulation voltage Short-iruit thermal urrent, I th Dynami urrent, I dyn TM 45 T 210 TW 25 TW 25 M...60 Hz 3 kv a.. 60 I n 2,5 I th Higher voltage for the material 0,72 kv a.. Thermal lass (105 o C) Enapsulated in self-extinguishing plasti VO Safety fator, Fs < 5 Sealed seondary terminals Yes Standards essories 5 Features Certifiate IEC 44-1, UNE , UL 94, VDE 0414 Code table TM 45 T 210 TW 25 TW 25 M 5/5 M601 M541 10/5 M602 M542 15/5 M603 M543 20/5 M604 M544 25/5 M605 M545 30/5 M606 M546 40/5 M607 M547 /5 M608 M548 60/5 M549 75/5 M54 100/5 M54B M /5 M54C M612 1/5 M54D M613 M /5 M54E M614 2/5 M54F M /5 M54G M /5 M54H M7-11

12 TI-420, TP-420, TCM-420, TCB-420 TI-420 TP-420 TCM-420 TCB-420 Type Bus bar x 30 x x x x b a a b Mounting TI-420 TP-420 TCM-420 TCB ,5 M811 M71041 M M812 M211 M71042 M M813 M212 M71043 M71051 M M814 M213 M71044 M71052 M71014 M815 M214 M71045 M71053 M M816 M821 M215 M221 M231 M71046 M71054 M71016 M M216 M71047 M M817 M822 M831 M217 M222 M232 M241 M71017 M71022 M M M823 M832 M218 M223 M233 M242 M251 M71023 M M824 M833 M224 M234 M243 M252 M71024 M M834 M235 M244 M253 M M835 M236 M245 M254 M M M M Current transformers WITH m OUTPUT Features Ω TI-420 TP-420 TCM-420 TCB-420 Operating Conditions Operating temperature ºC Higher voltage for the material (U m ) 0,72 kv a MXIMUM LOD RESISTNCE Measurement iruit Primary urrent Response in lineal frequeny Seondary urrent uray ( % I n, 0... ºC) Overloads (at ambient temperature) Standards TI-420 TP-420 TCM-420 TCB-420 ording to type...60 Hz m d ± 1,5 % I n 1,5 I n permanently IEC 44-1, UNE , IEC 664, VDE0110, VDE0414, UL 94, IEC , EN essories 5 V Power supply F-420 CodeM79911 M7-12

13 TC 420 / TP TC 020 Current transformers WITH BUILT IN CONVERTER TC 420 Type TC TC TC TC TC Inner Ø Bus bar mm 25 x 5 40 x x x x 12 b a 80, ,5 102 a b , , Mounting TC 420 TC TC TC TC TC M M M72114 M72131 M M72132 M M72134 M M72136 M M72151 M M72152 M M72153 M72053 Features TC 420 TC 020 Frequeny ssigned insulation voltage Short-iruit thermal urrent, I th...60 Hz 3 kv a.. 60 I n Dynami urrent, I dyn 2,5 I th Higher voltage for the material 0,72 kv a.. Thermal lass B (130 o C) Enapsulated in self-extinguishing plasti VO Safety fator, Fs < 5 Sealed seondary terminals yes Response time < 300 ms uray lass ± 1,5 % Standards IEC 44-1, B essories 5 DIN rail P-TC / WG Code P19921 Terminals over Code M79951 M7-13

14 TRM / TRMC / TRP CIRCUTOR has a large range of urrent transformers manufatured in resin. One of the advantages that this type of transformer has is that the resin inreases the CT s strength relative to: mehanial resistane, high eletrial rigidity, tropial weather, et.). lso, the transformer ore is not aessible in this Series. There are 3 types of transformers: TRM, TRP and TRMC RESIN moulded transformers TRM: Transformers enapsulated in resin for measurement TRP: Transformers enapsulated in resin for protetion TRMC: Transformers for utility ompany meters Transformer seletion table aording to transformer ratio (I pn / I sn ) 5 000/ / /5 2 0/ /5 1 0/ /5-800/5 7/5 0/5 600/5 0/5 400/5-300/5 2/5 200/5-1/5 125/5 100/5-75/5 TRM 30 TRM 40 TRM 60 TRM 80 TRM 100 TRM 140 TRM 180 TRMC 210 TRMC 400 TRP 400 TRP 40 TRP 60 TRP 80 TRP 100 TRP 140 TRP 180 MESUREMENT PROTECTION TRM / TRP Series - Enapsulated in resin (For further information see atalogue P.5) M7-14

15 SHUNTS Type SH Ratio 30 / 60 mv 30 M / 60 mv 40 M71232 / 60 mv M71233 Type SH Ratio / 60 mv M7123G / 60 mv M7123H 1 0 / 60 mv 1 0 M7123J CIRCUTOR offers a wide range of Shunts up to 15,000 for ontinuous urrent measurement. The standard seondary side output is 60 mv., 100, 1, 200, 300, 600 mv outputs are available upon request. Type SHP SHB Ratio 1 / 60 mv 1 M ,5 / 60 mv 1,5 M ,5 / 60 mv 2,5 M / 60 mv 60 M / 60 mv 80 M / 60 mv 100 M / 60 mv 1 M / 60 mv 200 M / 60 mv 2 M / 60 mv 300 M / 60 mv 400 M7123B 0 / 60 mv 0 M7123C 600 / 60 mv 600 M7123D 7 / 60 mv 7 M7123E 800 / 60 mv 800 M7123F / 60 mv M7123K 2 0 / 60 mv 2 0 M7123L / 60 mv M7123M / 60 mv M7123N / 60 mv M7123P / 60 mv M7123Q 7 0 / 60 mv 7 0 M7123R / 60 mv M7123S / 60 mv M7123T 12 0 / 60 mv 12 0 M7123U / 60 mv M7123V 4 / 60 mv 4 M / 60 mv 5 M / 60 mv 6 M / 60 mv 10 M / 60 mv 15 M / 60 mv 25 M / 60 mv 30 M71211 M / 60 mv 40 M71212 M7122B / 60 mv M71213 M7122C 60 / 60 mv 60 M71214 M7122D 75 / 60 mv 75 M / 60 mv 80 M7122E 100 / 60 mv 100 M71216 M7122F 1 / 60 mv 1 M71217 TSR Having to add multiple sets of urrent transformers onto one measuring devie is very ommon in meter installations. The TSR adding transformer offers an easy solution to this appliation. The output urrent generated by the TSR is obtained by using the following alulation: I OUTPUT = I 1 + I I n n n is the number if inputs on the TSR and /, /,../ is the urrent of eah input. The TSR an add all the onneted urrents, from several sets urrent transformers, to generate a proportional output. To do this the ratio of onneted CT has to be the same. Upon request a TSR an be manufatured to handle different ratio urrent transformers. Please speify ratios at time if inquiry. Number of inputs Power and auray Type Code 2 x 5 15 V / Class 0,5 TSR-2 M1 3 x 5 15 V / Class 0,5 TSR-3 M2 4 x 5 15 V / Class 0,5 TSR-4 M3 5 x 5 15 V / Class 0,5 TSR-5 M4 M7-15

16 essories TERMINL COVER essory to seal the seondary side terminals on the TC type transformer Code: M79951 P-TC / WG essory to mount the TC5, TC5.2, T6, TC6.2 transformer on a DIN rail Code: P19921 F-420 The F-420 module supplies a 15 V d power supply. This module is fed with 230 V a Code: M79911 TP outdoors protetor TET 114 / TET 144 For TP 58 - For TP 88 and TP TET 114 Code: M79972 TET 144 Code: M79973 M7-16

17 Dimensions TC 5 / TC 5.2 / TC 6.2 / TC 6 / TC 8 / TC 10 / TCH 5 / TCH 5.2 / TCH 6.2 / TCH 6 / TCH 8 / TCH 10 sizes in mm TC 5 TCH 5 TC 5.2 TCH 5.2 TC 6.2 TCH6.2 TC 6 TCH 6 TC 8 TCH 8 TC 10 TCH 10 a ,5 108 b 80,5 80, d 20, , e ,5 66, f g , h 5,6 5,6 5,6 5,6 6,6 6,6 i j k 25,6 30,6 20,6 40,6 60,6 80,6 l 15,6 15,6 30,6 25,2 30,6,8 TC 12 / TCH 12 T 400 T 0 T 600 M7-17

18 TP 23 / TP 58 / TP 88 / TP 812 / TP 816 sizes in mm TP-23 TP-58 TP-88 TP-812 TP-816 a b d e f g h i Note: ll types have mounting entring devies exept the TP-23 TM 45 T 210 TW 25 / TW 25M TI 420 sizes in mm TI TI-420- TI a b d 48, e M7-18

19 TCM TCM TCB-420 sizes in mm TCB TCB-420- TCB a b d 48, e TP 420 TSR M7-19

20 TC-020 / TC-420 sizes in mm TC 5 TCH 5 TC 6 TCH 6 TC 8 TCH 8 a ,5 b 80, d 20,3 28,5 44 e 45 66,5 69 f g 59 71,2 78 h 5,6 5,6 6,6 i j k 25,6 40,6 60,6 l 15,6 25,2 30,6 SHP / SHB / SH Voltage drop mv 60 1 Sope (1) Fig. a1 a2 b1 b2 b3 1 2 e h Weight kg 1-1, 5-2, No. of urrent splies Hexagonal srew DIN 933 Current splies Washer DIN 125 Nut DIN ,15 2 x 1 M5 x 12 5, ,13 2 x 1 M8 x 16 8, ,54 2 x 1 M12 x M ,78 2 x 1 M16 x M ,49 2 x 1 M20 x 21 M ,95 2 x 2 M16 x M x 2 M20 x 21 M20 1-1, 5-2, ,18 2 x 1 M5 x 12 5, ,14 2 x 1 M8 x 16 8, ,80 2 x 1 M12 x M ,38 2 x 1 M16 x M ,55 2 x 1 M20 x 21 M20 (1) ll shunts are supplied with onnetion ables, 1.5 m long and 1.5 mm 2 Ø diameter. Voltage splies 2 M5 x 8 DIN 84 srews and 2 x 5,3 DIN 433 washers Insulating baseboard in SHB types Fig 1: from 1 0 to 2 0 Fig 2: from 200 to Fig 3: from 1 0 to 2 0 M7-20