Overview
Enviro Test Construct’s high accuracy DC winding resistance ohmmeter with 200A output is a precision instrument for testing transformer windings, low-voltage switch contacts, and other inductive components. This device replaces traditional bridge measurement methods with advanced switching power supply technology and a high-visibility LCD display. It delivers rapid, accurate results with stable data, strong anti-interference capabilities, and arc suppression for safer operation. Designed for field and onsite use, it operates via AC power or a rechargeable battery, making it a reliable and portable solution for power system diagnostics.
Features
- Fast testing speed with up to 3 A current output
- High measurement accuracy with four-terminal configuration
- Constant current supply ensures stable readings
- Arc suppression for safe operation
- Dual power support with rechargeable battery and AC input
- LCD display for clear visibility in sunlight
- Strong anti-interference and stable data performance
- Portable design for field and onsite testing
Technical Specifications
| Measurement Range | 1 mΩ to 2 kΩ (in 6 auto-ranging steps) |
| Resolution | 1 µΩ |
| Measurement Accuracy | ± 0.5% |
| Constant Current Source | 3 A (1 µΩ to 2 Ω), 0.3 A (2 Ω to 20 Ω), 0.03 A (20 Ω to 200 Ω), 0.003 A (200 Ω to 2 kΩ) |
| Display Type | 4.5-digit LCD (resistance), 3.5-digit LCD (current/temperature) |
| Power Supply | DC 12 V to 16.8 V lithium-ion rechargeable battery, AC 220 V, 50 Hz (± 10%) |
| Power Consumption | ≤ 15 W |
| Relative Humidity | ≤ 85% RH |
| Temperature Range | 32 °F to 104 °F (0 °C to 40 °C) |
| Dimensions | 9.45 in x 7.09 in x 3.94 in (240 mm x 180 mm x 100 mm) |
| Product Weight | 4.85 lb (2.2 kg) |
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