High Voltage DC Power Supply 200W 400W with Over Current Protection

The XHHV508 series DC high voltage power supply fully complies with DL/T846 and DL/T474 standards for high voltage test equipment and on-site insulation testing. Designed for 35kV and below voltage-class cable fault testing — including DC withstand voltage, impulse discharge, and fault point burn-through — this instrument completely replaces traditional test transformer and control box systems that weigh over 70 kg combined.

Built with high-precision, high-stability specialized HV electronic components and high-frequency high-voltage technology, the XHHV508 features a simple, lightweight construction. Its unique short-circuit immune design allows the HV output to operate safely even when directly shorted to ground. As China's lightest portable DC impulse high-voltage equipment with flexible power configuration, it is the ideal instrument for power cable fault detection.

• DC Withstand Voltage and Burn-Through: Dual-mode operation supporting DC withstand testing for cable insulation verification and DC burn-through for converting high-resistance faults to locatable faults at up to 320mA.
• External Capacitor Interface: Supports 1-16 F external capacitor banks for impulse discharge testing, with the voltmeter continuously monitoring capacitor voltage even in standby mode.
• Short-Circuit Immune: High-frequency topology inherently survives direct HV-to-ground shorts — eliminates external ballast protection and survives accidental discharge faults without damage.
• Zero-Start Protection: HV output cannot be initiated unless voltage adjustment is at zero; yellow zero-start indicator confirms safe state before each test cycle.
• Automatic Self-Discharge: Internal bleed circuit dissipates residual voltage upon HV output stop — voltmeter returns to zero confirming safe state without requiring immediate manual discharge.
• Dual 1.5-Grade Pointer Meters: Analog HV voltmeter and LV ammeter provide real-time visual indication of discharge dynamics, arc establishment, and residual voltage.
• Comprehensive Protection: Over-current (12A, >8S), over-voltage, and over-temperature (65 C) automatic protection with manual reset — built for continuous field operation from -25 C to +65 C.