High-Voltage Insulation and Grounding Four-in-One Tester
Meets national standards, featuring AC and DC withstand voltage testing and arc detection functions; even extremely low breakdown currents can be accurately measured. Insulation resistance test voltage: 3000 V; test range up to 999 GΩ. Equipped with parallel withstand‑voltage and grounding tests to reduce testing time, as well as ground‑wire detection, leakage current monitoring, and overcurrent protection.
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Description
Product Introduction
- The accuracy of all safety‑related test items is 1%, and the accuracy of power measurements is 2%.
- Some models feature a withstand voltage rating of 500 VA (5 kV/100 mA, with a short‑term peak of 200 mA), meeting national standards.
- It features AC and DC withstand voltage testing as well as arc detection, and can accurately measure and display even extremely low breakdown currents.
- Insulation resistance test voltage: 3000 V; test range up to 999 GΩ.
- Equipped with a parallel withstand voltage and grounding test function, it reduces testing time.
- Equipped with comprehensive protection features, including ground‑fault detection, leakage protection, and overcurrent protection.
- Rich interface options: equipped with multiple interfaces including USB, HANDLER, RS232, and WiFi.
Technical Specifications:
| Model number | LK8742 | ||
| AC Withstand Voltage Test | |||
| Scope | Resolution | Precision | |
| Output voltage | 300~5000VAC | 1V | ±(1% of reading + 5 V) |
| Output frequency | 50/60Hz | ||
| Breakdown current | 0~100.00 mA, duration 200 mA peak | 0.001mA/0.01mA | ±(1%+0.002mA) |
| Ramp-up time | 0~999.9s | 0.1s | ±(1%+0.1s) |
| Descent time | 0~999.9s | 0.1s | ±(1%+0.1s) |
| Test time | 0.5~999.9s | 0.1s | ±(1%+0.1s) |
| Current compensation | 0~99.999mA | 0.001mA/0.01mA | |
| Arc Detection | 0~100.00mA | 0.01mA | ±5% |
| DC withstand voltage test | |||
| Scope | Resolution | Precision | |
| Output voltage | 300~6000VDC | 1V | ±(1% of reading + 5 V) |
| Breakdown current | 0~9.999mA | 0.001mA | ±(1%+0.002mA) |
| Ramp-up time | 0~999.9s | 0.1s | ±(1%+0.1s) |
| Descent time | 0~999.9s | 0.1s | ±(1%+0.1s) |
| Test time | 0.5~999.9s | 0.1 | ±(1%+0.1s) |
| Insulation Resistance Test | |||
| Scope | Resolution | Precision | |
| Output voltage | 100~3000V | 1V | ±(1% of reading + 5 V) |
| Insulation resistance | 100~3000V | 1V | 0.60 m ~ 9.99 m ±(1% of reading + 0.03 m) |
| 10.0 MΩ to 99.9 MΩ ±(3% of reading + 0.3 MΩ) 100 MΩ to 9,999 MΩ ±(5% of reading + 3 MΩ) | |||
| 10.0 GΩ ~ 100 GΩ ±(15% of reading + 0.8 G) | |||
| Ramp-up time | 0~999.9s | 0.1s | ±(1%+0.1s) |
| Descent time | 0~999.9s | 0.1s | ±(1%+0.1s) |
| Test time | 0.5~999.9s | 0.1s | ±(1%+0.1s) |
| Latency time | 0~999.9s | 0.1s | ±(1%+0.1s) |
| Ground Resistance Test | |||
| Scope | Resolution | Precision | |
| Output current | 1.0~32.0A (optional 40A) | 0.1A | ±(1% of reading + 0.2 A) |
| Output frequency | 50/60Hz | ||
| Ground resistance | 10~600.0 mΩ (voltage not exceeding 12 V) | 0.1 mΩ | ±(1% of reading + 2.0 mΩ) |
| Resistance compensation | 0~600.0 mΩ | 0.1 mΩ | ±(1% of reading + 2.0 mΩ) |
| Test time | 0.5~999.9s | 0.1s | ±(1%+0.1s) |
| Parallel testing | |||
| Standard configuration | Grounding + Withstand Voltage | ||
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Customer Reviews
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From Thomas Bennett, Quality Director, UK plastic pipe factory
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★★★★★
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Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment
From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute
2026.06.05
★★★★★
“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”
Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine
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