Description
HIOKI Digital Insulation Resistance Tester IR4057-50
An insulation tester applies a DC test voltage and measures the leakage through the insulation. It is the instrument that says whether a cable or winding is safe to energise.
Key Features
- Test voltage must match the circuit rating — 500 V for most installation work
- Disconnect and prove dead before testing; the instrument outputs hundreds of volts
- A falling reading over time matters more than one absolute number
Specifications
| Insulation Range |
100/250/500/2/000/4/000 |
| Test Voltage |
50/125/250/500/1/000 |
Specifications shown are for the base model; values vary by size. Contact us if you need the figures for a specific size.
About HIOKI
HIOKI of Ueda, Nagano has made electrical measuring instruments since 1935 — clamp meters, insulation testers and power analysers built for daily site use.
Ordering & Shipping
- Genuine product sourced through official Korean distribution
- Ships worldwide from South Korea by FedEx International Priority Express
- Import duties and taxes are payable by the recipient
- Bulk and trade pricing available on request
