HZ-3521A Portable Three Phase Energy Meter Field Calibrator
Huazheng Electric Manufacturing (Baoding) Co., Ltd. is one of the leading manufacturers and suppliers of HZ-3521A Portable Three Phase Energy Meter Field Calibrator in China. Please feel free to buy high quality equipment for sale here from our factory. Good service and reasonable price are available.
HZ-3521A Portable Three Phase Energy Meter Field Calibrator
The three-phase energy meter field calibrator is an advantageous product among the company's electric energy metering series products. It integrates an energy meter calibrator and a low-voltage metering device, offering functions including energy meter error calibration, error wiring judgment, transformation ratio measurement, meter reading, harmonic measurement, and more.
Introduction To Functions
Display and Measurement – The calibrator features a high-brightness, high-definition, high-resolution TFT color LCD screen that displays clearly and beautifully with large information content. The screen shows all parameters measured on site. Single and three-phase voltage, current, power, phase, active and reactive power factor, frequency, and other parameters can be measured in real time.
Error Calibration – Energy meter and terminal errors can be calibrated. Single-phase and three-phase electronic induction active and reactive energy meters can be inspected. Three pulse input modes are available: manual input, photoelectric input, and electric pulse input.
Clamp Meter Options and CT Testing – Optional 100 A, 500 A, and 1000 A clamp meters are available. The transformation ratio of low-voltage current transformers can be measured directly, making it easy to find open circuits and poor contacts in the CT secondary circuit, internal turn-to-turn short circuits in the CT, and whether the transformation ratio on the CT nameplate is consistent with the actual transformation ratio.
Harmonic and Waveform Analysis – The instrument can measure the content of the 2nd to 51st harmonics of single and three-phase voltage and current, as well as the waveforms of A, B, and C-phase voltage and current.
Power Supply and Storage – A wide working power supply range of AC 57–450 V is supported. Test line, adapter, and battery power supply can be chosen individually, and online charging is available. A large-capacity memory card can store field calibration data for more than 10,000 groups of energy meters, with U disk storage supported. Data is permanently saved unless manually deleted.
Software and Data Management – The ground software system can connect with the marketing system, featuring a friendly interface, easy operation, complete functions, and easy upgrade. Test data cannot be changed, and the software provides statistics, query, and printing functions. The test report format can be set according to user requirements.
Additional Functions – The calibrator can read record data from multi-function electronic energy meters, including reading data, pressure loss records, and clock information. It also features clamp transformer self-correction, eliminating the need to return the unit to the factory for calibration after replacing the clamp meter.
Technical Indicators
| 3.1 Input Characteristics | |
| – Voltage | 2–450V (automatic range conversion) |
| – Clamp-type CT measuring range | 0.1–5A (20A, 100A, 500A optional) |
| – Phase angle | 0–359.9° |
| – Frequency | 45–55Hz |
| 3.2 Accuracy | 0.05 |
| 3.3 Working Temperature | -20°C ~ +50°C |
| 3.4 Working Power | 80–265VAC |
| – Power consumption | ≤3VA |
| 3.5 Dimensions | 280mm (L) × 200mm (W) × 75mm (H) |
| 3.6 Weight | 2.5kg |
| 3.7 Insulation | |
| a. Insulation resistance (voltage/current input terminals to casing) | ≥100MΩ |
| b. Withstand voltage (working power input vs. casing) | 2kV power frequency (RMS), 1 minute |
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