Huazheng HZTD35 Three-phase Electric Energy Meter Calibration Device (45~65Hz, AC 30~480V)

Power supply: AC57~450V, 50~60Hz

Power consumption: About 10VA

Ambient temperature: -20℃~+40℃ (accuracy assured)

Relative humidity (not condensing): 40%-95%

Dimension (L×W×H, mm): 249×154×58

Weight: 1.8Kg

Warm-up time: < 3 minutes

Battery endurance: 4 hours

LCD color display: 5.7”, 320×240 TFT

Communication port: RS 232

Safety

Declaration of conformity: CE conformed

Operation reference

Measuring ranges

Voltage: AC 30~480V

Current:

• Direct connection: 1A, 5A

• Via clamp-on CT’s: 5A, 20A (±0.2%, self adjusted), 100A, 500A, 1000A (±0.5%)

Frequency: 45~65Hz

Phase: -180º ~ +180º

Constant of pulse:

• 5A: FL=3.6×10⁴ P/KWh, FH=3.6×10⁷ P/KWh

• Others: FL=36000×5/rated current (P/KWh), FH=3.6×10⁷×5/rated current (P/KWh)

Harmonic measurement

Range: 2nd~51st, Accuracy: ±0.01% (compared to 100% fundamental wave)

Transformation ratio deviation: < ±0.5%

Voltage deviation: < ±0.01%

Frequency deviation: < ±0.01% (45-55Hz)

Influence of temperature: < ±5ppm/℃ (typical)

Variation in 24hrs.: < ±0.02% (class 0.1)