Cable fault locator HZ-E-I High Voltage Bridge

Huazheng HZ-E-I High Voltage Bridge Locator The HZ-E-I High Voltage Bridge Locator is based on the MURRAY bridge principle, used for locating cable breakdown points, low insulation defects, and high-voltage sheath faults. It combines a high-voltage constant current source and bridge circuit in one portable unit, ensuring accurate, safe, and efficient operation. The instrument uses SMPS technology to produce a stable DC output up to 15kV with a short-circuit current of 30mA. It features a high-sensitivity amplifier, galvanometer balance display, and a proportional potentiometer for precise adjustment. The dual-core high-voltage test cable applies the four-terminal resistance method, avoiding errors from lead resistance. Compact and lightweight (≤12kg), it integrates all controls at ground potential for operator safety and uses reliable grounding for stable measurement. Functions and Applications • DC voltage test: 0–15kV adjustable for cable withstand testing • Fault burn-through: reduces high-resistance or flashover faults • Fault pre-location: accurate cable fault distance indication Suitable for: • High-resistance cable breakdowns • Linear HV faults difficult to burn through • Flashover or low-resistance insulation defects Technical Specifications • Test voltage: 0–15kV DC adjustable • Max current: 30mA • Accuracy: ±(0.2%•L ±1)m • Power supply: AC220V ±10% • Anti-interference: >100VAC • Weight: ≤12kg • Size: 478×360×316mm Key Features • Based on MURRAY bridge principle • High-voltage constant current up to 15kV • Four-terminal resistance measurement • Portable, safe, and easy to use • Excellent anti-interference capability