Portable High Voltage Surge Generator 0-32kV 2048J 35kV Cable Fault Detection DC Withstand Testing | XHHV535-4Z

XHHV535-4Z Portable High Voltage Surge Generator

Compliance and Certification

The XHHV535-4Z high voltage surge generator is designed and manufactured in full compliance with DL/T846-2016 (General Technical Conditions for High Voltage Test Equipment) and DL/T474-2017 (Guidelines for the Implementation of Field Insulation Tests). Certified to CE and ISO standards, this instrument meets the rigorous requirements of industrial power cable testing applications.

Application Scope

Engineered for impulse discharge testing and DC withstand voltage testing on power cables rated 35kV and below, the XHHV535-4Z integrates a DC high voltage source, energy storage capacitor, and discharge ball gap into a single portable unit. This integration replaces traditional test configurations requiring separate test transformers, control boxes, and pulse energy storage capacitors — significantly reducing on-site equipment footprint and setup complexity.

Core Advantages

• Class 1.5 Measurement Accuracy: High-voltage side voltage metering with dual pointer display (current and voltage) provides real-time, high-precision readings during both DC withstand and impulse discharge operations.
• 2048J Maximum Discharge Energy: 4μF built-in capacitor delivers consistent impulse energy up to 2048J at 32kV, ensuring reliable breakdown of high-resistance cable faults.
• Dual-Mode Operation: Supports DC withstand voltage testing for cable insulation evaluation and impulse discharge mode for fault pre-location and pinpointing — two essential functions in a single instrument.
• Ultra-Lightweight Portable Design: At ≤35kg with compact dimensions of 430*345*550mm, the XHHV535-4Z is the lightest portable DC impulse high voltage equipment in its class, enabling single-operator transport and rapid field deployment.
• Zero-Start Safety Interlock: Voltage adjustment must return to zero before high voltage can be initiated, eliminating risk of accidental high-voltage output on startup.
• Comprehensive Protection Suite: Integrated overcurrent protection (12A threshold, >8s delay at low-voltage side), overtemperature protection (65°C), and overvoltage protection ensure safe operation under adverse field conditions.
• Short-Circuit Resilient: Designed to operate normally even when high voltage output is short-circuited to ground, providing robust fault tolerance during field testing.
• Manual Discharge Capability: Dedicated discharge button allows controlled dissipation of residual capacitor energy after testing, with real-time voltmeter indication of capacitor voltage.

Technical Specifications

Operating Modes

DC Withstand Voltage Mode: Applies regulated 0-32kV DC voltage for cable insulation withstand testing. The voltage adjustment knob provides smooth ramping with real-time voltmeter and ammeter indication. Suitable for routine insulation assessment and commissioning tests on medium-voltage power cables.

Impulse Discharge Mode: Generates periodic high-energy impulses for cable fault pre-location and pinpointing when used in conjunction with a TDR cable fault locator and acoustic-magnetic pinpointer. Discharge interval is adjustable via the front-panel time relay, allowing optimization for different cable lengths and fault characteristics.

Typical System Configuration

Safety and Reliability

All high-voltage terminals incorporate dedicated grounding points. The zero-start interlock requires the voltage adjustment knob to be returned to zero before the high-voltage output can be initiated. The stop button provides immediate high-voltage cutoff with automatic internal capacitor discharge. A dedicated manual discharge button enables controlled residual energy dissipation, with real-time voltmeter monitoring of capacitor voltage throughout the discharge process.

For technical consultation, product specifications, or a commercial quotation, please contact our engineering team.