The three-phase reference standard meter is made according to the R46 standard published by the OIML (International Organization of Legal Metrology), which is high precision, multifunctional and high performance.
It is used for tests and calibrations of gateway energy meters and high-level calibrators.


Function
- Tests of voltage, current, power, phase angle, power factor and frequency
- Tests of the distortion of each phase voltage and current, and measure and analyze the 2nd – 64th harmonics
- Tests of the peaked waveform, quadriform waveform, sub-harmonics, high-order harmonics and other waveforms specified in R46.
- Test of fundamental active power / electric energy, total harmonic active power / electric energy and full wave
- Tests of the stability and asymmetry of each electric quantity
- 7-inch color touch screen
Specification
Item | Parameter |
---|---|
Test voltage, phase-neutral | 30 V – 720 V |
Voltage ranges | 60 V, 120 V, 240 V, 480 V, 720 V |
Harmonics accuracy, voltage | Order: 2nd – 20th, ±0.2 % reading + ±0.05 % range Order: 21st – 64th, ±0.3 % reading + ±0.05 % range |
Test current | 1 mA – 120 A |
Current ranges | 10 mA, 20 mA, 50 mA, 0.1 A, 0.2 A, 0.5 A, 1 A, 2 A, 5 A, 10 A, 20 A, 50 A, 100 A |
Current accuracy | 1 mA – 25 mA: 240 ppm reading + 160 ppm range 25 mA – 100 A: 120 ppm reading + 80 ppm range |
Harmonics accuracy, current | Order: 2nd – 20th, ± 0.2 % reading + ± 0.05 % range Order: 21st – 64th, ± 0.3 % reading+ ± 0.05 % range |
Harmonics accuracy, power | Order: 2nd – 20th, ± 0.2 % reading + ± 0.1 % range |
Phase shift | ±180° |
Phase shift accuracy | ±0.02° |
Frequency range | 45 Hz – 65 Hz |
Frequency accuracy | 0.01 Hz |
Power factor range | -1 … 0 … +1 |
Power factor accuracy | 5 ppm |
Impulse input | 0 -100 kHz |
Impulse output | 0 – 50 kHz |
Operating power supply | AC 220 V ±10 %, 45 Hz – 65 Hz |
Power consumption | < 30 VA |
Operating temperature | 23 °C ±10 °C |
Storage temperature | -5 °C – 50 °C |
Voltage measurement accuracy | < 0.01 % |
Voltage measurement drift | < 25 ppm/year |
Current measurement accuracy, 1 mA…25 mA | ≤ 0.1 % |
Current measurement accuracy, ≥ 25 mA | < 0.01 % |
Current measurement drift | < 55 ppm/year |
Power measurement accuracy P, Q, S | < 0.02 % (current ≥ 25 mA and λ = 1) |
Power measurement drift | < 80 ppm/year |
Phase angle accuracy | < 0.01° (current ≥ 25 mA and voltage > 30 V) |
Phase angle resolution | 0.0001° |
Frequency accuracy | 0.01 Hz |
Frequency resolution | 0.0001 Hz |
Voltage temperature drift | < 2.5 ppm/K |
Current temperature drift | < 5 ppm/K |
Power temperature drift | < 7.5 ppm/K |
Preheating time | 15 minutes |
Surge voltage protection | Class C |
Installation category | CATIII |
Pollution degree | 2 |
Relative humidity | ≤ 85 % RH, not condensate |
Dimensions (W x H x D) | 500 mm × 133 mm × 485 mm |
Weight | Approx. 19 kg |
Meter Constant Table
CL3112D power constants | |||||
---|---|---|---|---|---|
60 V | 120 V | 240 V | 480 V | 600 V | |
0.01 A | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 |
0.02 A | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 |
0.05 A | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 |
0.1 A | 1.8 x 109 | 1.8 x 109 | 1.8 x 109 | 1.25 x 109 | 1.0 x 109 |
0.2 A | 1.8 x 109 | 1.8 x 109 | 1.25x 109 | 6.25 x 108 | 5.0 x 109 |
0.5 A | 1.8 x 109 | 1.0 x 109 | 5.0 x 108 | 2.5 x 108 | 2.0 x 108 |
1 A | 1.0 x 109 | 5.0 x 108 | 2.5 x 108 | 1.25 x 108 | 1.0 x 108 |
2 A | 5.0 x 108 | 2.5 x 108 | 1.25 x 108 | 6.25 x 107 | 5.0 x 107 |
5 A | 2.0 x 108 | 1.0 x 108 | 5.0 x 107 | 2.5 x 107 | 2.0 x 107 |
10 A | 1.0 x 108 | 5.0 x 107 | 2.5 x 107 | 1.25 x 107 | 1.0 x 107 |
20 A | 5.0 x 107 | 2.5 x 107 | 1.25 x 107 | 6.25 x 106 | 5.0 x 106 |
50 A | 2.0 x 107 | 1.0 x 107 | 5.0 x 106 | 2.5 x 106 | 2.0 x 106 |
100 A | 1.0 x 107 | 5.0 x 106 | 2.5 x 106 | 1.25 x 106 | 1.0 x 106 |
The output frequency for end of range in voltage/current pair with three phase connection is 50 kHz. The power pulses are on TTL/CMOS level. The burden capacity is > 20 mA.
Calculation formulas
Frequency

UR = voltage range
IR = current range
c = reference meter constant
Constant

The meter constants can be set in the settings menu or selected automatic. Setting range is 1 i/kWh to 2 x 109 i/kWh.
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