GW Instek GPT-9503 Hi-Pot tester
Details
The GW Instek GPT-9500 series offers professional safety testing in a compact format. The GPT-9503 is a 3-in-1 model supporting AC/DC withstanding, insulation resistance up to 10GΩ, and continuity tests. Featuring an integrated 8-channel scanner and 150VA AC capacity, it is ideal for high-volume automated environments.
The unit features a 4.3" colour TFT LCD with multi-language support and a statistics function for tracking results. It includes RS-232C, USB Device, and Signal I/O for remote control, while a front-panel USB Host port enables easy data export and parameter sharing.
To ensure safety and precision, the tester includes ARC detection and an Open/Short Check (OSC) to verify connections before high-voltage application. The rear panel provides dedicated scanner outputs for streamlined integration into automated test systems.
The GPT-9513 offers superior versatility for complex components by allowing channels to be configured as a return path (Low), which enables the testing of multi-tap transformers. In contrast, GPT-9503 is primarily used to test multiple products simultaneously against a common ground, as its channels are limited to High or Off status.
Tests
Hi-pot (AC/DC Withstanding)
Aim: To prevent users of a product from receiving an electrical shock due to insulation failure.
Method: By measuring current leakage between high-voltage and "safe" low-voltage parts. The AC test provides up to 5kV/30mA and the DC test up to 6kV/10mA.
Insulation Resistance
Aim: To test the quality of the insulation.
Method: Measures resistance from 0.1MΩ to 10GΩ using DC voltages between 50V and 1000V.
Continuity Test
Aim: To verify that conductive parts and their ground are well connected.
Method: Checks the electrical path using a 100mA DC output current with a measurement accuracy of 1Ω ±0.2Ω.
Arc Detection
Aim: To expose potential problems such as loose screws or poor insulation.
Method: Monitors for rapid current changes during high-voltage testing that indicate potential arcing.
Models
The differences between the models in the GPT-9500 series are detailed below:
| Model | AC Withstanding | DC Withstanding | Insulation Resistance | Continuity | Scanner Channels | Price |
|---|---|---|---|---|---|---|
| GPT-9503 | 8 (H or X) | |||||
| GPT-9513 | 8 (H, L or X) |
Specifications
| Output voltage range (AC) | 0.050 kV ~ 5.000 kV |
| Output voltage resolution | 1 V |
| Max. AC capacity | 150 VA (5kV/30mA) |
| Max. current (AC) | 30 mA (0.5kV < V ≤ 5kV) |
| Output-voltage waveform | Sine wave, 50 Hz/60 Hz selectable |
| Display | 4.3" Colour TFT LCD (480 x 272) |
| Interfaces | RS-232C, USB Host/Device, Signal I/O |
| Dimensions | 320 x 120 x 435 mm |
| Weight | 11 kg |
Accessories
The GPT-9503 Hi-pot tester is supplied with the following:
- 1x Power cord
- 1x Test lead GHT-115
- 1x Test lead GHT-116B
- 8x Test lead GHT-116R
Downloads
| DTC sample |  (126.04 KB) | Download |
| GW Instek GPT-9500 series user manual | (5.2 MB) | Download |
| GW Instek GPT-9500 series datasheet | (1.74 MB) | Download |
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