Meters. Ampere Meter. Volt Meter. Watt Meter. Var. Meter. Power Factor Meter. Frequency Meter. Demand Meter. Meter Relay.
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1 Meters Ampere Meter Volt Meter Watt Meter Var. Meter Power Factor Meter Frequency Meter Outside Connection (Watt, PF, Var) Receive Indicator Meter Demand Meter Meter Relay Meter Dimensions Meter Connection
2 Ampere Meter D- Ampere Meter The types of operating principle of ammeter are the rectifier type and the moving iron type, and the rectifier type ammeter has a merit of measuring small current value compared with moving iron type. Features D-0 To deal with current exceeding 5A, use a 5A(1A) meter in combination with a C.T. A.C ammeter is used with a current transfomer externally mounted, and it is noted that primary current of a current transformer and a full scale of the meter are identical when used. If the circuit voltage exceeds 0V even when the current is less than 5A use a 5A(1A) meter in combination with a C.T to ensure insulation. The scale range of ammeter for motor circuit is extended up to 0%~0% of rated current, so that these are proteced from the impact of the starting current and ensured of long life. Am expanded scale has the normal maximum reading(upper limit of effective measurement range) at the app. 5% point on the scale, and the rest of it (5%~%) is devoted to extension reading. (tolerance of extension area : 5%) Meter rating (A.C) Meter rating (D.C) ma A / 1A / 5A ma A / 1A / 5A A A / mv / 0mV 3
3 D- Ampere Meter The types of operating principle of ammeter are the moving coil type. D- Features For higher ranges than 5A, use external shunt with a mv(mv) instrument. When D.C ammeter is used with a shunt, it is noted that a full scale and a terminal voltage(mv, mv) of the ammeter are same as the rated primary current and secondary voltage of the shunt respectively. Use any leadwire of which resistance is less then 0.05 in total. If the shunt lead resistance is indefinite, the meters may be set up with a available resistor(v.r) for sensitivity adjustment. The shunt should be connected to the negative side linc. Shape of case Type Rated Curr. Operating Princ. Accur. (%) Freq. Burden (VA) Rectangular ( x mm) D- 5A, mv ~ Hz 1.0 mv Drop Rectangular ( x mm) D- 5A, mv ~ Hz 1.0 mv Drop Rectangular ( x mm) D- 5A, mv ~ Hz 1.0 mv Drop Rectangular ( x 3mm) D- 5A, mv ~ Hz 1.0 mv Drop Rectangular ( x mm) D- 5A, mv ~ Hz 1.0 mv Drop Rectangular ( x mm) D- 5A, mv ~ Hz 1.0 mv Drop Rectangular (70 ) D-70 5A, mv ~ Hz 1.0 mv Drop Rectangular (72 x 72mm) D-0 5A, mv ~ Hz 1.0 mv Drop Rectangular (9 x 9mm) D-0 5A, mv ~ Hz 1.0 mv Drop 39
4 Volt Meter D- Volt Meter The types of operating principle of voltmeter are the rectifier type(a.c), and moving iron type(a.c) the voltmeter is used with a potential transformer externally mounted in case of high voltage. Features D-0 For higher ranges than 0V, use potential transformer(p.t) with a 0V A.C voltmeter. But the voltmeter of 0V is able to supply by order of customer. When lettering the voltage ratio on voltmeter, the meters for 3phase wire are lettered as like as the meters for 3phase 3wire. namely on 3phase wire in case of the indicating for line-to-line voltage by line-to- ground voltage, and line-to-line voltage by line-to-line voltage, he meters are not wited the 3 Full scale of voltmeter when use the P.T, the standard calibration value of voltmeters are 0V and/or 0V but, the full scale of voltmeters are indicated the Kv, 9000V, 0V and 0V etc. Volt Meter Volt Meter 1 V 0 V / V V 0 V / 2V mv 7 V / 10V
5 Volt Meter The types of operating principle of voltmeter are the moving coil type. D- Features For higher ranges than 7V, use external multiplier or voltage-dividing multiplier with a 1mA instrument. The D.C voltmeter shuld be connected to the positive side line as connection diagram. The standard current consumption of these D.C voltmeter is 1mA. (1K /V). D- Shape of case Type Rated VOLTS Operating Princ. Accur. (%) Freq. Burden (VA) Rectangular ( x mm) D- 0, 0V 1, 0V ~ Hz Rectangular ( x mm) D- 0, 0V 1, 0V ~ Hz Rectangular ( x mm) D- 0, 0V 1, 0V ~ Hz Rectangular ( x 3mm) D- 0, 0V 1, 0V ~ Hz 5.0, Rectangular ( x mm) D- 0, 0V 1, 0V ~ Hz Rectangular ( x mm) D- 0, 0V 1, 0V ~ Hz Rectangular (70 ) D-70 0, 0V 1, 0V ~ Hz Rectangular (72 x 72mm) D-0 0, 0V 1, 0V ~ Hz Rectangular (9 x 9mm) D-0 0, 0V 1, 0V ~ Hz 1
6 Watt Meter The types of operating principle of these meters are the transducer type, these meters measure active power. Transducer is used with the transducer type attached inside or outside. D-P111TU ~3V ~2V 1~5A Features Operating voltage range is 10% of rated voltage. For other voltage and/or current ratings higher then listed on the spescification, use external current transformer and/or external potential transformer with a V/5A instrument, when ordering, specify the full scale value desired, P.T ratio and C.T ratio Rating voltage of 3phase wire is at Phase voltage.(/ 3) When using P.T and C.T, calibrating watts will be as follows. Full scale watts calibrating watt = (P.C ratio) (C.T ratio) The standard calibration watt of the meter for single phase 2wire was calibrated the 0W The standard calibration watt of the meter for single phase 3wire was calibrated the 1.0Kw as the meter for 3phase 3 wire. The standard calibration the 0W (1.0Kw) as the meter for 3phase 3wire. The standard calibration watt of the meter for 3phase 3wire was calibrated the 1.0Kw The standard calibration watt of the meter for 3phase wire was calibrated the 1.Kw. The other 1) In case of 22900V calibrating watt of 3phase 3wire : 0.91Kw calibrating watt of 3phase wire : 1.Kw 2) In case of 3V 3phase 3wire - use to potential transformer ratio 3/V : 1.Kw - not use to potential transformer :.0Kw 3phase wire use to potential transformer ratio / V : 2.0Kw not use to potential transformei:.0kw 3) In case of 3 V - not use to potential transformer at 3phase wire : 2.0Kw When shall be catch the flow of current, be used the Watt meter. Example (3phase wire) Full scale of wattmeter : 00W P.T ratio : / V 3 3 C.T ratio : / 5A 00W Calibrating watts = ( / V) (/5A) 3 3 =1.Kw The instrument of D-W T Type is self contained with the Transducer Box. 2
7 Shape of case Circuit Application Type Rated Volt. Rated Curr. Oper Princ. Accur. (%) Freq. (Hz) Burden Remark Curr. Volt. Curr. Volt. 1P2W D-W1, 2 V Rectangular 1P3W D-W2 V ( x mm) D-W3, 2 V D-W 190/ 3, 3/ 3 D-W5 190/ 3, 3/ 3 1P2W D-W111T, 2 V Rectangular 1P3W D-W1T V ( x mm) D-W113T, 2 V D-W11T 190/ 3, 3/ 3 D-W1T 190/ 3, 3/ 3 Stanard Full Scale Table (Watt meter) Phase Wire 1P2W 1P3W P.T ratio(v) Calibrating Watts C.T ratio 0.Kw 5 / Kw 2.0Kw 1.Kw Kw Kw 0 1.0Kw 1.0Kw Kw 0 Kv 1.0Kw 10 / 3 2.0Kw 2 3/ 3 190/ 3 2.0Kw 3 3.0Kw / 3 190/ 3 1.Kw 22900/ 3 190/ 3 1.Kw 0 10 / / / / / / MW 10 / / / / / / / / / MW 10MW MW 0 / / / MW 0 / / / / MW / / / MW /
8 Var. Meter The types of operating principle of these meters are the transducer type, these meters measure reactive power. Transducer is used with the transducer type attached inside or outside. D-V11T ~3V ~2V A, 5A Features Operating voltage range is 10% of rated voltage. For other voltage and/or current ratings higher then listed on the specification, use external C.T and/or external P.T with a V/5A instrument, when ordering, specify the full scale value desired, P.T ratio and C.T ratio. Rating voltage of 3phase wire is at phase voltage.(/ 3 ) The full scale of varmeter is generally 1/2, 1/3, or 1/ of load capaciry. When using P.T and C.T, calibrating vars will be as follows Full scale Vars calibrating watt = (P.C ratio) (C.T ratio) Namely 1) The standard calibration var of the meter for single phase 2wire : 0Var (0.3Kvar) 2) Single phase 3wire : 0Var (Kvar) 3) 3phase 3wire : 0Var (KVar) ) 3phase wire : 33Var (0.33Kvar) The other 1) In case of 22900V - Calibrating var of 3phase 3wire : Var - Calibrating var of 3phase wire : 33Var 2) In case of 3V - 3phase 3wire use to potential transformer ratio 3/V : 579Var not use to potential transformer : 2.0Kvar phase wire use to potential transformer ratio V : 1.0Kvar 3 3 3) In case of / 3V no use to potential transformer at 3phase wire : 1.0Kvar The standard scale is LAG. The varmeter with 0 point at center is recomended, if it is used instead of a power factor meter. In case of using the varmeter as a power factor meter, it is recommended, to use a left side and of 0 point at the center as Lead-O-LAG. The instrument of D-V T Type is self contained with the Transducer Box.
9 Shape of case Circuit Application Type Rated Volt. Rated Curr. Oper Princ. Accur. (%) Freq. (Hz) Burden Remark Curr. Volt. Curr. Volt. 1P2W D-V1, 2 V Rectangular ( x mm) 1P3W D-V2 D-V3 V, 2 V D-V 190/ 3, 3/ 3 D-V5 190/ 3, 3/ 3 1P2W D-V111T, 2 V Rectangular ( x mm) 1P3W D-V1T D-V113T V, 2 V D-V11T 190/ 3, 3/ 3 D-V1T 190/ 3, 3/ 3 Standard Full Scale Table (1/2 Var. meters) Phase Wire 1P2W 1P3W 3P 3W 3P W P.T ratio(v) Calibrating Watts C.T ratio 0.3Kvar 5 / Kvar 1.0Kvar 79Kvar 1 2 Kvar 2 30 Kvar 0 Kvar Kvar Kvar Kv Kvar 700 / 3 1.0Kvar 1 3/ 3 190/ 3 1.0Kvar Kvar 2 / 3 190/ Kvar 22900/ 3 190/ Kvar 10 / / / / / / / / / Mvar 7 00 / / / / / / / / / Mvar 10Mvar Mvar 0 / / / / Mvar 10 / / / Mvar /
10 Power Factor Meter The types of operating principle of these meters are the transducer type and also the meter divide into the balanced power factor meter and the unbalanced power factor meter. D-P11TU Features Operating voltage range : rated voltage 10% For other voltage and/or current ratings higher then listed in specification use external C.T and/or external P.T with a V/5A instrument. The instrument of D-P T Type is self contained with the Transducer Box. Rating voltage of 3phase wire is at phase voltage. (/ 3) The meter do not operate when load current is under 10% of rated current. And if the circuit current is less than a 1/3 of the ating (or less than 1.A if the rating is 5A) the error of P.F meter may have happened more than that of rated current. Standard scale : Lead ~1.0~Lag ~3V ~2V 1~5A Shape of case Circuit Application Type Rated Volt. Rated Curr. Oper Princ. Accur. (%) Freq. (Hz) Burden Curr. Volt. Remark 1P2W D-P1, 2 V 1P3W D-P2, 2 V Rectangular D-P3, 2 V ( x mm) D-P3u, 2 V D-P 190/ 3, 3/ 3 D-Pu 190/ 3, 3/ 3 1P2W D-P111T, 2 V 1P3W D-P1T, 2 V Rectangular D-P113T, 2 V ( x mm) D-P113Tu, 2 V D-P11T 190/ 3, 3/ 3 D-P11Tu 190/ 3, 3/ 3
11 Frequency Meter The types of operating principle of these meters are the transducer type. And this meter is used for measuring the frequency of generator. D-70 Features Usable voltage range. V rating : V to 1V, 2V rating : 1V to 2V The standard scale range is the 5Hz to 55Hz, and/or 55Hz to 5Hz. For a rating voltage higher than 2V, use external potential transformer with a V instrument. Source Source P.T External Potential Transformer D- Load Load Shape of case Type of Pointer Type Rated Volt. Oper Princ. Accur. (%) Burden (VA) Rectangular ( x mm) D- Rectangular ( x 3mm) D- Rectangular ( x mm) D- Rectangular ( x mm) D-, 2V Rectangular (70 ) D-70 Rectangular (72 x 72mm) D-0 Rectangular (9 x 9mm) D-0 7
12 Outside Connection Watt Meter & Var. Meter With Ext. Transducer (D- Type) With Int. Transducer (D- T Type) 1Phase 2Wire Watt Meter & Var. Meter 1Phase 3Wire Watt Meter & Var. Meter 3Phase 3Wire Watt Meter & Var. Meter 3Phase Wire Watt Meter & Var. Meter Voltage 3Phase Wire Watt Meter & Var. Meter
13 Power Factor Meter Ext. Transducer (D-P Type) Int. Transducer (D-P T Type) 1Phase 2Wire Power Factor Meter 1Phase 3Wire Power Factor Meter 3Phase 3Wire Power Factor Meter type 3Phase 3Wire Power Factor Meter type 3Phase Wire Power Factor Meter type 3Phase Wire Power Factor Meter type 9
14 Receive Indicator This option meter of operating principle are the rectifier type and the moving coil type. D- 1~0V - 1~0V 0~1mA ~ma D- Shape of case Type Operating Princ. Accur. (%) Freq. Burden (VA) Rectangular ( x mm) Rectangular ( x mm) D- D- Rectangular ( x mm) D- Rectangular ( x 3mm) D- Rectangular ( x mm) D- Rectangular ( x mm) D- Rectangular (72 x 72mm) D-0 Rectangular (9 x 9mm) D-0 Rectangular (70 ) D-70 ~Hz D.C ~Hz D.C ~Hz D.C ~Hz D.C ~Hz D.C ~Hz D.C ~Hz D.C ~Hz D.C ~Hz D.C
15 Demand Meter This meter of complex type of analogue and digital type has a peak for memory of maximum instaneous value of the transient voltage orcurrent during the short circuit or ground fault on the transmission and distribution lines. D-DW113T 1. Normal voltage and current will be indicated by an along needle and then the peak value will be indicated on digital FAD(3Digital). 2. Demand of peak value will be indicated as memory (3Digital) the max one at only of many peak values. 3. The rating of digital is same as analogue and full scale of is same as on analogue.. The peak value always turns on in the digital display, it is reset the peak value by pressing the button.(push S/W) 5. When auxiliary power loss occurs, the peak value will be accumulated in S-RAM. when auxiliary power returns, the peak value will be displayed in the digital display.. If an external reset terminal is connected on push button S/W, at inpossible to reset on outside. Outside Connection Diagram Volt, Ampere, Hz, Meter Watt, Var, PF, Meter Exit Reset Exit Reset Aux Power Meter Input Transducer Aux Power Meter Input Name of meter Shape of case Type Rating Operating Princ. Accur. (%) Freq. Burden Aux Power Ground Current Meter Ground Voltage Meter Rectangular (xmm) Rectangular (xmm) D-D111 D-D 0, 2, 259V % % Hz or Hz 1VA VA 2 or 51
16 MR (Meter Relay) This meter relay of complex type of analogue and digital type is used for alarm or trip of some circuit in accordance with setting the movement value and time of Meter(7segment LED) which indicates low and high limitation on ampere meter, voltage, meter. D-R111C Caution 1. Read the instructions in this explanation because they furnish important indications about the setting value. 2. Auxiliary power : V(2V) / Hz. 3. Nomal voltage and current will be indicated by an along needle and on digital FND (3Digital). Name of meter Shape of case Type Rating Operating Princ. Accur. (%) Freq. Burden Aux Power Meter Relay Current Meter Rectangular (xmm) D-R111A D-R111B D-R111C 1A, % Hz or 1VA 2 or Meter Relay Voltage Meter Rectangular (xmm) D-RA D-RB D-RC 0, 2 0, 0V % Hz VA Outside Connection Diagram Ampere, Volt, Hz, Meter Watt, Var, PF, Meter 52
17 How to adjust push S/W (see the picture No. ~ ) 1. The LED display meter input value. To confirm the setting value a manual working condition is obtained by pushing the button as follow. High Relay & Low Relay Input value High preset point High relay operating time Low relay operating time Low preset point Only High Relay Input value High preset point High relay operating time Other displays except input value return to the lnput mode after secs. 2. Operating value and operating time setting by pressing the button no and for 3secs at the same time, the setting mode will be entered the LED flashes then press the button no to change the flashing value of the display and use the button no to increase the count of it. After setting the input value, press the button no and for 3secs at the same time to save the value of selection. (Display will be shown as below) High Relay & Low Relay Input value High preset point High relay operating time Low relay operating time Low preset poin Only High Relay Input value High preset point High relay operating time If a manual operation is not obtained for secs while the LED is flashing, the LED will be returned to the input mode. 3. Meter Relay Operating This meter is able to set the time 0 to 99 seconds. If the input value is lower than low setting value or higher than high setting value, the relay contacts are operated after presetting time. (During presetting time the LED or flashes, then after presetting time the LED is lightened and its replay is operated) When the auxiliary power is connected the initial time, low relay will not operate without an input value which is higher than the low setting value at first.(lt is to poeventing the operating the relay without input value at the initial) For turning off low relay operating set 0 to the low setting value. High setting value should be set higher than the input maximum value of meter to be off the high relay operating. 53
18 Meter Dimensions D-70 Cutting Size 9 D-0 Cutting Size 7 x 7 D-0 Cutting Size 92 x 92 D- Cutting Size 5 D- Cutting Size 53 D- Cutting Size 53 5
19 D- Cutting Size 5 D- Cutting Size D- Cutting Size D- Cutting Size Transducer (For Meters) The transducer for meter is used with the watt, var and P.F meter. 55
20 Meter Connection Power Factor Meter () Watt Meter () Var Meter () Power Factor Meter () Watt Meter () Var Meter () Power Factor Meter () Watt Meter () Var Meter () Power Factor Meter () Watt Meter () Var Meter () 5
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