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TD1550 DC Energy Meters Verification Device

TD1550 is a platform device that can be used for the verification of DC electric energy meter and DC shunt. It consists of DC voltage standard source, DC current standard source, DC small signal voltage standard source, DC voltmeter (option), multi position verification platform, verification software, etc. It can verify not only conventional DC electrical measuring instruments, but also DC shunt, direct and indirect connected DC energy meters.TD1550 can calibrate multiple energy meters at the same time.

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Model:
TD1550
Brand:
TUNKIA

TD1550 DC Energy Meters Verification Device

TD1550 Verification Apparatus for DC Energy Meters

* This is for your reference only，the configuration and details may vary depending on the application scenarios

1. Summary

TD1550 is a platform device that can be used for the verification of DC electric energy meter and DC shunt. It consists of DC voltage standard source, DC current standard source, DC small signal voltage standard source, DC voltmeter (option), multi position verification platform, verification software, etc. It can verify not only conventional DC electrical measuring instruments, but also DC shunt, direct and indirect connected DC energy meters.

2. Features

• Accuracy: class 0.02, class 0.05

• 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

• Optional 3 or 6 meter position DC electric energy meter and DC shunt calibration stand

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

• Auxiliary power supply is used to supply power for electronic meters for measuring DC electrical energy(type A).

• Standard second pulse measurement is used to detect the daily timing error of the electric energy meter

• Mobile measurement and control station, which can observe or control the output through the LCD touch screen

• DC shunt manual/automatic crimping device (option), used for DC shunt verification.

3. Applications

☆ Verification of DC Energy Meter

Verification of DC Energy Meter 2

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

• Application scenario 2：The instrument has 10 μ V~4.4 V four wire small signal voltage source, with 1550 V DC voltage source and electric energy pulse measurement function, can carry out relevant testing work of indirect connected DC energy meters.

• Application scenario 3：The instrument supports 600 A maximum current output option, with 1550 V DC voltage source and electric energy pulse measurement function, and can carry out relevant tests on the whole of indirect connected DC energy meters and DC shunt.

☆Verification of DC Shunt (option)

TD1550 Verification Apparatus for DC Energy Meters 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 shunt

• DC shunt manual crimping device (option): manually compress the current terminal of the DC shunt and connect it with the current source to form a current loop.

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

☆ Calibration of DC electrical measuring instruments

TD1550 Verification Apparatus for DC Energy Meters 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 class 0.02 device reaches class 0.01, which is applicable to the calibration of DC voltmeter or ammeter of class 0.05 and below.

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

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	1 μV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
1 V	10 μV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
3 V	10 μV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
10 V	0.1 mV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
30 V	0.1 mV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
100 V	1 mV	0.005	0.002	120 + 80	60 + 40	200	< 1.0
300 V	1 mV	0.005	0.002	120 + 80	60 + 40	60	< 1.0
600 V	1 mV	0.005	0.002	120 + 80	60 + 40	30	< 1.0
1000 V	10 mV	0.005	0.002	120 + 80	60 + 40	15	< 1.0
1500 V [2]	10 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, 6-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 [3]

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	0.1 μA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
50 mA	0.1 μA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
100 mA	1 μA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
200 mA	1 μA	0.005	0.003	120 + 80	60 + 40	12	< 0.5
500 mA	1 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
1 A	10 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
2 A	10 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
5 A	10 μA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
10 A	0.1 mA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
20 A	0.1 mA	0.005	0.003	120 + 80	60 + 40	3	< 0.5
50 A	0.1 mA	0.005	0.003	120 + 80	60 + 40	3	< 1.0
100 A	1 mA	0.005	0.003	120 + 80	60 + 40	3	< 1.0
200 A	1 mA	0.005	0.003	120 + 80	60 + 40	3	< 1.0
500 A	1 mA	0.005	0.003	120 + 80	60 + 40	3	< 1.0
Note: [3] As the current input of the direct connected DC energy meters, or the current input of the external shunt of the indirect connected DC energy meters;

• Output range：1 mA～600 A，6-bit display

• Protection function: open circuit protection, overload protection

5.3 DC Small Signal Voltage Output[4]

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: [4] 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 )，6-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 Shunts Verification

5.4.1 DC Voltage Measurement

Range	Resolution	Accuracy (k=2) (ppm of reading + ppm of range or μV)	temperature coefficient ± ppm*RD /°C@15°C～30°C
1 mV	10 nV	120 + 2 μV	30
3 mV	10 nV	120 + 2 μV	30
10 mV	0.1 μV	120 + 2 μV	10
30 mV	0.1 μV	120 + 80	10
100 mV	1 μV	120 + 80	10
300 mV	1 μV	120 + 80	5
1 V	10 μV	120 + 80	5
4 V	10 μV	120 + 80	5

• Output range：± ( 10 μV～4.4 V )，6-bit display，Manual/automatic range switching

• Input resistance：>1GΩ；Input protection：± 50Vpk，continuity.

5.4.2 DC Resistance Measurement

Test current	Voltage Range	Measuring Range Of Resistance	Accuracy (k=2) @ Full Scale Voltage Value[5]
Test current	Voltage Range	Measuring Range Of Resistance	Class 0.05	Class 0.02
5 A	1 mV	20.0000 μΩ～200.000 μΩ	0.232%	0.222%
	10 mV	200.000 μΩ～2.00000 mΩ	0.052%	0.042%
	100 mV	2.000 00 mΩ～20.000 0 mΩ	0.04%	0.03%
	1 V	20.000 0 mΩ～200.000 mΩ	0.04%	0.03%
10 A	1 mV	10.000 0 μΩ～100.000 μΩ	0.232%	0.222%
	10 mV	100.000 μΩ～1.000 00 mΩ	0.052%	0.042%
	100 mV	1.000 00 mΩ～10.000 0 mΩ	0.04%	0.03%
	1 V	10.000 0 mΩ～100.000 mΩ	0.04%	0.03%
20 A	1 mV	5.000 00 μΩ～50.000 0 μΩ	0.232%	0.222%
	10 mV	50.000 0 μΩ～500.000 μΩ	0.052%	0.042%
	100 mV	500.000 μΩ～5.000 00 mΩ	0.04%	0.03%
	1 V	5.000 00 mΩ～50.000 0 mΩ	0.04%	0.03%
50 A	1 mV	2.000 00 μΩ～20.000 0 μΩ	0.232%	0.222%
	10 mV	20.000 0 μΩ～200.000 μΩ	0.052%	0.042%
	100 mV	200.000 μΩ～2.000 00 mΩ	0.04%	0.03%
	1 V	2.000 00 mΩ～20.000 0 mΩ	0.04%	0.03%
100 A	1 mV	1.000 00 μΩ～10.000 0 μΩ	0.232%	0.222%
	10 mV	10.000 0 μΩ～100.000 μΩ	0.052%	0.042%
	100 mV	100.000 μΩ～1.000 00 mΩ	0.04%	0.03%
	1 V	1.000 00 mΩ～10.000 0 mΩ	0.04%	0.03%
200 A	1 mV	500.000 nΩ～5.000 00 μΩ	0.232%	0.222%
	10 mV	5.000 00 μΩ～50.000 0 μΩ	0.052%	0.042%
	100 mV	50.000 0 μΩ～500.000 μΩ	0.04%	0.03%
	1 V	500.000 μΩ～5.000 00 mΩ	0.04%	0.03%
500 A	1 mV	200.000 nΩ～2.000 00 μΩ	0.232%	0.222%
	10 mV	2.000 00 μΩ～20.000 0 μΩ	0.052%	0.042%
	100 mV	20.000 0 μΩ～200.000 μΩ	0.04%	0.03%
	1 V	200.000 μΩ～2.000 00 mΩ	0.04%	0.03%
Note [5]: The uncertainty of resistance measurement corresponding to other voltage values=(∆ U/U₀+∆ I/I₀), U₀ and I₀ are the reading values of current voltage and current respectively, ∆U and ∆I are the absolute error values of current measured voltage and current respectively

• Measuring range of resistance：200.000 nΩ～4.00000 Ω，6-bit display，Minimum resolution：1 pΩ

• The current test point can be set through the number keys, and the voltage range: manual/automatic switching

• After loading the test current, the R (t) change curve can be tested

5.5 Daily timing error

• Annual measurement uncertainty of device standard clock：2×10-7

• Daily timing error supports two error display modes: s/d and ppm/ppb

5.6 DC Electric energy index

DC Power/Electric Energy	Range	Combination of DC voltage and DC current (or DC small signal voltage)
DC Power/Electric Energy	Accuracy	Uncertainty of voltage measurement+uncertainty of current measurement (or uncertainty of DC small signal voltage measurement)
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 ≤ 150 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%

5.7 Auxiliary power supply

DC Power Output	OutputVoltage	24 V
	Maximum Burden Current	120 mA / Epitope
	Protection Function	Replaceable fuse protection
AC Power Output	Output Voltage	220 V
	Maximum Burden Current	20 mA / Epitope
	Protection Function	Replaceable fuse protection

6. Ordering Information

TD1550 Verification Apparatus for DC Energy Meters Ordering Information

7. General Specifications

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

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☆ Clock check function

• Built in clock module with precision up to 0.2 ppm, which can measure the second pulse signal for daily timing error test • Built in GPS module and antenna can receive GPS standard clock signal.
☆ Auxiliary power supply

• Each meter position has built-in auxiliary power supply, which can provide DC 24 V or AC 220 V power supply for electronic meters for measuring DC electrical energy (type A).

☆ Clock check function

• Built in clock module with precision up to 0.2 ppm, which can measure the second pulse signal for daily timing error test • Built in GPS module and antenna can receive GPS standard clock signal.
☆ Auxiliary power supply

• Each meter position has built-in auxiliary power supply, which can provide DC 24 V or AC 220 V power supply for electronic meters for measuring DC electrical energy (type A).

TD1550 DC Energy Meters Verification Device

TD1550 DC Energy Meters Verification Device

TD1550 DC Energy Meters Verification Device

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