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TD1545 DC Energy Meters Verification Device

TD1545 is a multi-functional instrument dedicated to the verification and calibration of DC electrical meter. It consists of DC voltage standard source, DC current standard source, DC small signal voltage source, DC standard virtual power source etc. It can verify not only conventional DC electrical measuring instruments, such as DC voltmeter/ammeter/power meter, but also DC shunt, direct and indirect connected DC energy meters.

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Model:
TD1545
Brand:
TUNKIA

TD1545 DC Energy Meters Verification Device

TD1545 Verification Apparatus For DC Energy Meter

1. Summary

2. Features

• Accuracy: class 0.01, class 0.02

• DC standard voltage source：10 mV～1150 V / 1550 V（option）

• DC standard current：1 mA～600 A

• DC small signal voltage source(four-line)：10 μV～4.4 V

• Standard electric energy pulse input/output, used to detect the working error of electric energy meter

• A variety of quantity output adjustment methods

• Portable and easy to integrate into the cabinet to form a test system

• Support remote control adjustment output (option)

• Secondary signal measurement of transmitter (functional option)

3. Applications

☆ Calibration of DC electrical measuring instruments

TD1545 Verification Apparatus For DC Energy Meter Calibration of DC electrical measuring instruments

• Calibration of DC voltmeter and ammeter: the device has a built-in DC voltage standard source with an output range of 10 mV ～ 1550 V and a DC current standard source with an output range of 1 mA ～ 600 A. The voltage and current accuracy of the 0.02 level device reaches 0.01 level, which is applicable to the calibration of DC voltmeter or ammeter of 0.05 level and below.

• Calibration of DC power meter: a virtual power standard source composed of independent DC voltage and current output. The accuracy of a 0.02 level device reaches 0.02 level, which is applicable to the calibration of DC power meters of 0.1 level and below.

• Calibration of DC transmitter (option): The secondary DC signal measurement function of the optional transmitter supports the maximum DC 12 V or 24 mA signal input. With DC voltage, current and power standard sources, the proportional error of the transmitter can be detected.

☆ Calibration of DC Energy Meter

TD1545 Verification Apparatus For DC Energy Meter Calibration of DC Energy Meter

• Application scenario 1: The maximum DC voltage output is 1550 V, meeting the requirements of 1.15 Un voltage test of 1 kV electrical energy meter; The maximum DC current output is 600 A, meeting the requirements of 1.2 In current test of 100 A electrical energy meter. With the power pulse measurement function, the test of direct connected DC watt hour meters for measuring DC electrical energy can be completed.

• Application scenario 2: The instrument has 10 μV~4.4 V four wire small signal voltage source, with 1550 V DC voltage source and electric energy pulse measurement function, can carry out the verification of indirect access DC electric energy meters.

• Application scenario 3: The maximum output of DC current is up to 600 A, which can be used as the primary current input of the DC shunt. With 1550 V DC voltage source and power pulse measurement function, the overall verification of the DC shunt + indirect connected meters for measuring DC electric energy can be achieved.

☆ Verification of DC shunt (option)

TD1545 Verification Apparatus For DC Energy Meter Verification of DC shunt (option)

• DC high current standard source: the maximum output is 600 A, which can be used as the primary current input of the DC shunt.

• DC small signal voltmeter: support voltage input range is 10 μV~4.4 V, which can measure the secondary output voltage of the DC shunt.

• Special low thermal potential wire and terminal block: it can reduce the measurement uncertainty introduced by contact potential and thermoelectric potential.

• Verification and test of DC shunt (option): it can measure the resistance value and basic error of the shunt, and draw R (I) and R (t) curve.

5.Specifications

5.1 DC Voltage Output

Range	Resolution	Short Term Stability (% / min)		Accuracy (k=2) (ppm of reading + ppm of range) [1]		Maximum Burden Current (mA)	Ripple ( % )
Range	Resolution	Class 0.05	Class 0.02	Class 0.05	Class 0.02	Maximum Burden Current (mA)	Ripple ( % )
100 mV	1 μV	0.005	3.5 μV	120 + 80	60 + 5 μV	200	< 1.0
300 mV	0.1 μV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
1 V	1 μV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
3 V	1 μV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
10 V	10 μV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
30 V	10 μV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
100 V	0.1 mV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
300 V	0.1 mV	0.005	0.002	120 + 80	60 + 40	60	< 1.0
600 V	0.1 mV	0.005	0.002	120 + 80	60 + 40	30	< 1.0
1000 V	1 mV	0.005	0.002	120 + 80	60 + 40	15	< 1.0
1500 V[2]	1 mV	0.005	0.002	120 + 80	60 + 40	10	< 1.0
Note [1] : (ppm = parts per million) (e.g.，10ppm = 0.001%). [2]：1500V range is an option.

• Output range: 10 mV～1150 V, 7-bit display

• 1500 V voltage output option can be selected to expand the voltage output range to 10 mV～1550 V

• Protection function: Short circuit protection, overload protection

5.2 DC Current Output DCI [2]

Range	Resolution	Short term stability (% / min)		Accuracy (k=2) (ppm of reading + ppm of range)		Maximum Burden Voltage (V)	Ripple ( % )
Range	Resolution	Class 0.05	Class 0.02	Class 0.05	Class 0.02	Maximum Burden Voltage (V)	Ripple ( % )
10 mA	0.1 μA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
20 mA	10 nA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
50 mA	10 nA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
100 mA	0.1 μA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
200 mA	0.1 μA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
500 mA	0.1 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
1 A	1 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
2 A	1 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
5 A	1 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
10 A	10 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
20 A	10 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
50 A	10 μA	0.005	0.003	120 + 80	60 + 40	3	< 1.0
100 A	0.1 mA	0.005	0.003	120 + 80	60 + 40	3	< 1.0
200 A	0.1 mA	0.005	0.003	120 + 80	60 + 40	3	< 1.0
500 A	0.1 mA	0.005	0.003	120 + 80	60 + 40	3	< 1.0
Note: [3] As the current input of the direct access DC electric energy meter, or the current input of the external shunt of the indirect access DC electric energy meter;

• Output range: 1 mA～600 A, 7-bit display

• Protection function: open circuit protection, overload protection

5.3 DC Small Signal Voltage Output/Measurement DCIU [3]

Range	Resolution	Short term Stability (% / min)	Accuracy (k=2) (ppm of reading + ppm of range)	Maximum Burden Current (mA)	Ripple ( % )
1 mV	10 nV	0.1 μVrms	120 + 0.3 μV	—	< 0.2
3 mV	10 nV	0.3 μVrms	120 + 1 μV	—	< 0.2
10 mV	0.1 μV	1 μVrms	120 + 3 μV	—	< 0.2
30 mV	0.1 μV	0.002	120 + 80	—	< 0.2
100 mV	1 μV	0.002	120 + 80	—	< 0.2
300 mV	1 μV	0.002	120 + 80	≤ 10	< 0.2
1 V	10 μV	0.002	120 + 80	≤ 10	< 0.2
4 V	10 μV	0.002	120 + 80	≤ 10	< 0.2
Note: [3] When the indirect connected DC energy meters is verified separately, it can be used as its current input (corresponding to the shunt voltage)

• Output range: ± ( 10 μV～4.4 V ), 7-bit display

• The specification and current voltage ratio of the shunt can be set, and the output value can be displayed according to the voltage or current converted by the shunts

5.4 DC Electric Energy

DC Power/Electric Energy	Range	Combination of DC voltage and DC current (or DC small signal voltage)
DC Power/Electric Energy	Accuracy	class 0.05:0.05%RD class 0.02:0.02%RD
Electric energy pulse	Standard Electric Energy Pulse Output	High frequency full range value corresponds to 60 kHz; Low frequency full range value corresponds to 6 Hz;
	Pulse Output Frequency	Output frequency jitter time<10 μ s
	Standard Electric Energy Pulse Input	Signal amplitude is 5V, TTL level; Able to receive high-frequency pulses ≤ 200 kHz; FH=60 kHz × Power value ÷ voltage range value ÷ current range value FL=60 kHz ×Power value ÷ voltage range value ÷current range value ÷ 10000
	Electric Energy Error Display	Automatic display, resolution 0.0001%

5.5 DC Small Signal Measurement (option)

Voltage/Current Range	Measuring Range	Accuracy (k=2) (ppm of reading + ppm of range)
1 V	± (0～1.2) V	60 + 40
10 V	± (0～12) V	60 + 40
2 mA	± (0～2.4) mA	60 + 40
20 mA	± (0～24) mA	60 + 40

6. Ordering Information

7. General Specifications

Power Supply	AC ( 220 ± 22 ) V, ( 50 ± 2 ) Hz
Temperature Performance	Working temperature: 15°C～30°C； Calibration temperature: 18°C～22°C； Storage temperature: -20°C～70°C
Humidity Performance	Working humidity: < 80% @ 30°C, < 70% @ 40°C, < 40% @ 50°C Storage humidity: (20%～80%) R·H, No condensation
Interface	RS232、USB、LAN