Primary Current Injection Tester
The ZW5000S is a high-power primary current injection tester capable of outputting up to 5000A AC.
It offers 0.5-level accuracy, automatic contact identification, and synchronized action time measurement for breaker and thermal relay calibration.
Product Overview
The ZW5000S Primary Current Injection Tester is an advanced booster equipment designed to output continuous high AC current up to 5000A.
It is widely applied in power, railway, and petrochemical industries for testing thermal relays, motor protectors, circuit breakers, and current transformer ratios, ensuring precise calibration and reliable electrical system performance.
Functions and Value:
- High Current Output:
Generates 0 to 5000A continuous, standard sine wave AC current with a ripple factor of less than 0.3%, ensuring strong load capacity and stable testing for high-voltage equipment. - Synchronized Timing Measurement:
Accurately measures and synchronizes the action time of tested equipment from 0.0001s to 9999.9999s, automatically distinguishing normally open and closed contacts. - High-Precision Digital Display:
Features a six-and-a-half-digit LCD for voltage and current, offering true effective value measurements with up to 0.5-level accuracy for highly reliable test results. - Automated CT Polarity and Ratio Testing:
Automatically measures transformer polarity and incorporates an instrument display lock function to make transformer ratio test readings fast and precise. - Portable and Data-Ready:
Remarkably small and lightweight (30% to 70% the volume of similar models) and includes RS485 communication for easy data uploading and USB storage.
Technical Details
| Parameter | Specification |
|---|---|
| Model | ZW5000S Primary Current Injection Tester |
| Power Supply | AC 220V, 50/60Hz |
| Power Capacity | 50 KVA |
| Output Current | Single-phase 0 – 5000.00A AC (Steplessly adjustable) |
| Output Opening Voltage | 10V |
| Measurement Accuracy | 0.5 Level (True RMS display) |
| Current Stability | 0.5% |
| Current Waveform Distortion | THD < 1% (Standard sine wave, ripple factor < 0.3%) |
| Synchronous Timing Range | 0.0001S – 9999.9999S |
| Timing Accuracy | 0.0001S |
| Protection System | Built-in Overcurrent & Overvoltage Protection |
| Environmental Group | Group III (Suitable for outdoor environments) |
Model Selection Guide
| Item NO. | Max Output Current | Power Capacity | Output Opening Voltage | Input Voltage | Recommended Application |
|---|---|---|---|---|---|
| ZW200S | 200A | 1 KVA | > 6V | AC 220V | Small thermal relays, micro switches, lab testing |
| ZW500S | 500A | 3 KVA | > 5V | AC 220V | Motor protectors, breakers, small switch cabinets |
| ZW1000S | 1000A | 6 KVA | > 6V | AC 220V | CT ratio tests, primary bus protection, medium substations |
| ZW2000S | 2000A | 10 KVA | > 5V | AC 220V | Industrial power assets, switchgear calibration |
| ZW3000S | 3000A | 15 KVA | 5V | AC 220V / 380V | High-capacity CTs, power plant electrical maintenance |
| ZW4000S | 4000A | 20 KVA | 5V | AC 220V / 380V | Heavy-duty substation verification, large switchgear |
| ZW5000S | 5000A | 50 KVA | 10V | AC 220V / 380V | Large-scale power grids, heavy industrial load testing |
| Customized | OEM / ODM | Made to order | Made to order | 220V / 380V | Special sizes & non-standard power utility projects |
Not sure which model fits your rigorous testing? Contact our engineers for a custom recommendation.
Recent Work
Parts List
| Item NO. | Max Current | Measuring Range | Main Features | Recommended Application |
|---|---|---|---|---|
| GDZR-10A | 10A | 100μΩ - 20KΩ | Portable, built-in discharge alarm | Small to medium distribution transformers |
| GDZR-20A | 20A | 10μΩ - 10KΩ | High-speed testing, heat dissipation | Medium-sized power transformers |
| GDZR-40A | 40A | 1μΩ - 2KΩ | Dual-channel measurement, high current | Large-scale power transformers |
| GDZR-40A | Three-Phase 10A | 100μΩ - 10KΩ | Three-phase simultaneous measurement | Yn-type transformers, time-saving |
Product Video
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Certificate
Frequently Asked Questions
Contact our engineers for technical support and application guidance.
It is primarily used for testing and calibrating thermal relays, motor protectors, circuit breakers, air switches, and performing various current transformer ratio test items in electrical test sites.
Yes, the output current is a smooth and continuously adjustable standard sine wave with tiny burrs. The current waveform distortion (THD) is less than 1%, and the ripple factor is less than 0.3%.
Yes, the tester can automatically identify normally open and normally closed contacts, measuring the action time of the tested component with a highly accurate synchronized chronograph.
The instrument directly displays both primary and secondary current true effective values on a high-precision six-and-a-half-digit LCD display, making it incredibly convenient for observation and ratio calculations.
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