Power Testing Instruments
GD820 HV Switch Dynamic Characteristic Tester
Tests the mechanical characteristics of oil, oil-less, SF6 and vacuum high-voltage circuit breakers, and performs timing tests on electromagnetically operated devices such as contactors and relays. 500 kV anti-interference design with 12 time channels.
Overview
Tests the mechanical characteristics of oil, oil-less, SF6 and vacuum high-voltage circuit breakers, and performs timing tests on electromagnetically operated devices such as contactors and relays. 500 kV anti-interference design with 12 time channels.
Standards & Compliance
Benchmark standards for this equipment category
Systems in this category are commonly specified against these standards, linked to the issuing body. Final configuration and acceptance criteria follow the standard and edition you nominate.
- IEC 60060-1 — High-voltage test techniques
- IEEE 43 — Insulation resistance testing
- IEEE 81 — Grounding resistance measurement
- DL/T 845 — Loop resistance testing
- DL/T 911 — Winding deformation (FRA) test
- JJG 169 — Chinese metrology verification regulation
Application Scenarios
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Get a QuoteDetailed Description
Overview: the GD820 is suitable for testing the mechanical characteristics of oil, oil-less, SF6 and vacuum high-voltage circuit breakers, and for timing tests on electromagnetically operated devices such as contactors and relays.
Time testing: 12 time channels suit close/open time, bounce, synchronism and auto-reclosing tests on all kinds of breakers, with a 500 kV anti-interference design. The time test range is 0.1-997 ms with an accuracy of ±0.1%.
Travel and speed: a sensor channel with 0.1 mm, 1 mm and 1° photoelectric sensors and a universal mounting bracket provides displacement, speed and waveform measurement. The 1 mm sensor covers 0.01-25.0 m/s (±1%) and 0-1000 mm travel; the 0.1 mm sensor covers 0.001-2.50 m/s (±2%) and 0-40 mm travel.
Current characteristics: a built-in DC control supply supports current-characteristic curve testing and low-voltage operation tests. The current-characteristic test range is 40 mA-10 A with ±1% accuracy, and the DC output is 0-250 V continuously adjustable at up to 15 A.
Display and output: a large backlit LCD supports rich speed definitions, non-direct moving-rod testing (e.g. angle), displacement/speed/current waveform display and analysis, two-cursor speed calculation, data storage and PC data-management via RS232. A high-speed thermal printer prints data tables and waveform curves.
Technical Specifications
| Time test | Range 0.1-997ms, accuracy ±0.1% |
|---|---|
| Speed test (1mm sensor) | 0.01-25.0 m/s, accuracy ±1% |
| Speed test (0.1mm sensor) | 0.001-2.50 m/s, accuracy ±2% |
| Travel test (1mm sensor) | 0-1000mm, accuracy ±1% |
| Travel test (0.1mm sensor) | 0-40mm, accuracy ±1% |
| Current characteristic test | 40mA-10A, accuracy ±1% |
| DC output | 0-250V continuously adjustable, ≤15A |
Frequently Asked Questions
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Reviewed by the Application Engineering Team at Nanjing Gaodian Electric Power Equipment
Specifications are taken from the manufacturer’s technical documentation. Final configuration and acceptance criteria follow the standard and edition you nominate — tell us your test list and we will confirm the ratings.
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