Single Phase Relay Protection Tester
The ZWJD101 is a highly portable and cost-effective Single Phase Relay Protection Tester.
It scientifically combines a current/voltage generator, digital standard meter, and an ultra-precise digital stopwatch into one compact unit, making it the perfect tool for fast on-site verification of traditional electromagnetic and solid-state relays.
Product Overview
The ZWJD101 Single Phase Relay Protection Tester is engineered to calibrate and evaluate a comprehensive range of electrical relays in high and low voltage distribution systems. Capable of pinpointing action values, return values, and operating times, it supports electromagnetic, rectifier, transistor, reclosing, and GL/LL type inverse time relays.
By combining standard voltage and current generators with advanced digital instrumentation, it provides testing laboratories and power engineers with a reliable, all-in-one solution for maintaining safety and operational compliance in industrial power grids.
Functions and Value:
1. Comprehensive Relay Testing: Evaluates critical parameters such as action current, return voltage, and charge/discharge time, ensuring comprehensive safety checks for diverse relay types in standard distribution networks.
2. High-Power Current Generation: Delivers continuously adjustable AC current up to 150 A and output power up to 1.5 kW, effectively accommodating the rigorous testing requirements of relays with large internal resistance, such as GL-type inverse time relays.
3. Microsecond Time Measurement: Incorporates an 8-digit digital stopwatch with an exceptional accuracy of ±0.0001 s, providing engineers with precise time validation for relay contact actions and return delays.
4. Integrated Digital Instrumentation: Replaces traditional analog meters with highly accurate 4.5-digit digital voltmeters and 3.5-digit digital ammeters, improving data reliability and field operation efficiency.
5. Portable All-in-One Design: Scientifically consolidates a current generator, voltage regulator, and precision timing module into a single compact casing, significantly reducing the equipment load for on-site commissioning and maintenance.
Technical Details
| Parameter | Specification |
|---|---|
| Model | ZWJD101 |
| AC Current Output | 0–5 A, 0–150 A |
| DC Current Output | 0–500 mA, 0–20 A |
| AC Voltage Output | 0–250 V (I ≤ 5 A, 50 Hz) |
| DC Voltage Output | 0–300 V (I ≤ 5 A, 50 Hz) |
| Auxiliary Power Supply | Fixed 220 V (I ≤ 0.5 A) |
| Time Measurement Range | 0–99.99 s |
| Stopwatch Accuracy | ±0.0001 s |
| Output Power | 1.5 kW |
| Meter Accuracy | 0.5% RDG ± 1 digit |
| Power Supply | 220 V AC ±10%, 50 Hz |
| Operating Temperature | -40°C to +50°C |
Model Selection Guide
| Model | Rated Voltage (Peak) | Maximum Load Capacity | Key Difference |
|---|---|---|---|
| ZWVLF-30 | 30kV | 0.1Hz ≤ 0.5µF, 0.01Hz ≤ 5.5µF | Basic configuration for lower voltage |
| ZWVLF-40 | 40kV | 0.1Hz ≤ 0.5µF, 0.01Hz ≤ 5.5µF | Extended voltage range |
| ZWVLF-50 | 50kV | 0.1Hz ≤ 0.5µF, 0.01Hz ≤ 5.5µF | Suitable for 10kV cable testing |
| ZWVLF-60 | 60kV | 0.1Hz ≤ 0.5µF, 0.01Hz ≤ 5.5µF | Includes auxiliary external cylinder |
| ZWVLF-80 | 80kV | 0.1Hz ≤ 0.5µF, 0.01Hz ≤ 5.5µF | Standard for 35kV cable testing |
| ZWVLF-90 | 90kV | 0.1Hz ≤ 0.5µF, 0.01Hz ≤ 5.5µF | Maximum capacity testing |
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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Frequently Asked Questions
Contact our engineers for technical support and application guidance.
The instrument is designed to test electromagnetic, rectifier, transistor integrated circuit relays, reclosing relays, and GL/LL type inverse time relays in electrical distribution systems.
The tester provides continuously adjustable AC current up to 150 A and DC current up to 20 A to accommodate diverse relay calibration requirements.
The built-in 8-digit digital stopwatch offers a measurement range of 0 to 99.99 seconds with a high precision of ±0.0001 s, ensuring exact recording of action and return times.
Yes, the instrument can safely measure action and return times for passive contacts, including normally open and normally closed configurations. It is strictly forbidden to energize the contact terminals during testing for safety reasons.
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