Instek GPI-825 AC 500VA Withstand Voltage / Insulation Tester

The Instek GPI-825 is an AC 500VA withstand voltage and insulation resistance tester engineered for electrical safety verification in manufacturing and repair environments. It delivers dual-mode testing: AC withstand voltage up to 5 kV AC with adjustable arc detection, and insulation resistance measurement to 2000 MΩ at DC 500 V or 1000 V. The instrument combines precision voltage and current metering with safety-critical features including zero-crossing turn-on, automatic FAIL indication via alarm lamp and buzzer, and programmable test duration from 1 to 180 seconds or continuous operation.

Technical Specifications

AC Withstanding Voltage Test

Output voltage: 0.1 kV to 5 kV AC

Voltage regulation: 15%

Voltage accuracy: ±3% of reading ±3 counts

Power capacity: 500 VA

Trip current range: 0.3 mA to 100 mA

Current accuracy: 3% of reading ±2 counts

Arc detection: Adjustable, 0.3 mA to 100 mA range

Zero crossing turn-on: Standard

Insulation Resistance Test

Output voltage: DC 500 V / 1000 V

Resistance range: 1 MΩ to 2000 MΩ

Accuracy (1–500 MΩ): ±5% of reading

Accuracy (501–2000 MΩ): ±10% of reading

Key Features

Simultaneous three-parameter display: voltage, current, and timer (3.5-digit LED, 0.39 inch)

True RMS current readback

Adjustable voltage output during test period

Test time selectable: 1–180 seconds or continual mode

Remote control support: START, RESET, and Pass/Fail signals via 9-pin PLC connector

Power supply: AC 115 V or 230 V, 50/60 Hz (factory configured)

Physical & Operating Parameters

Dimensions: 330 mm W × 149 mm H × 446 mm D

Weight: 15–20 kg

Operating temperature: 0° to 40°C (32° to 104°F)

Altitude rating: Up to 2000 m

Relative humidity: Up to 80%

Indoor use only

Compliance & Integration Complies with JIS, CSA, UL, BS standards and European Directives 89/336/EEC, 92/31/EEC (EMC); 73/23/EEC, 93/68/EEC (Low Voltage); and IEC/EN 61010-1 (Safety). Supplied with power cord, instruction manual, and GHT-105 test lead.