The XHHV535-4T is a high-energy trolley-mounted DC high-voltage surge generator delivering 2450J discharge energy—the highest in the XHHV535 series—at up to 35kV for underground power cable fault testing and DC withstand voltage analysis. Built around a single 4μF/35kV energy storage capacitor, it provides maximum flashover energy for challenging high-resistance cable faults in a simplified, cost-effective single-capacitor design.
Integrating a DC high-voltage source, energy storage capacitor, discharge ball gap, automatic discharge device, and built-in fault sampling waveform module into a mobile trolley chassis (119kg), the XHHV535-4T features tri-mode operation: DC withstand voltage testing, single impulse discharge, and periodic cycle discharge with 7-second auto-impulse timing. A dual-Q line communication socket enables synchronized waveform acquisition with cable fault locators during high-voltage flashover testing. The trolley's humanized design allows easy movement within workshop and laboratory environments.
Maximum Energy, Minimal Complexity—The XHHV535-4T delivers the highest single-pulse discharge energy (2450J) in the XHHV535 family through a proven single-capacitor architecture. For organizations that prioritize peak flashover energy over multi-voltage switching flexibility, the 4T offers exceptional value with fewer components, lower maintenance complexity, and a more accessible price point compared to the 3-speed XHHV535-4TS. Ideal for high-resistance cable fault applications where maximum discharge power is critical for breaking through fault barriers.
| Control | Function |
|---|---|
| Ammeter | Indicates low-voltage side current in real time |
| Voltmeter | Shows high-voltage output level |
| Zero Indicator | Voltage knob at zero position; must be lit before Start is effective |
| HV Indicator | Illuminated = high voltage active; Off = no high voltage output |
| Power Indicator | Illuminated when AC220V power is normal after power switch on |
| Power Switch | AC220V 50Hz input; 8A fuse; main system power control |
| Mode Selector | Withstand Voltage (DC), Single impulse, Cycle discharge |
| Start Button | Initiates high voltage at zero state; HV light on; non-zero = invalid |
| Stop Button | Cuts high-voltage output; auto-discharges residual voltage on device and cable |
| Voltage Control Knob | Zero state = zero light on; after HV start, rotate to boost voltage |
| Signal Socket | Dual-Q line to cable fault locator for flashover waveform sampling |
| Output Voltage | 0–35kV (continuous adjustment) |
|---|---|
| Built-in Capacitor | 4μF/35kV |
| Discharge Energy | 2450J |
| Surge Power | 2kVA |
| Auto-Impulse Time | ~7s automatic (manual override available) |
| Voltage Accuracy | 2.5 level |
| High-Voltage Divider | Built-in; real-time high-voltage side metering |
| Operating Modes | DC withstand / Single impulse / Cycle discharge |
| Safety Protections | Zero-start interlock, auto-discharge, over-current, over-voltage |
| Waveform Sampling | Built-in fault sampling module + communication socket |
| Weight | ~119kg (trolley-mounted) |
| Power Supply | AC220V±10%, 50Hz±2Hz (other frequencies customizable) |
| Ambient Temperature | -20 – +50°C |
The XHHV535-4T serves cable testing workshops, power utility maintenance depots, industrial electrical testing teams, and budget-conscious testing service providers who need maximum single-pulse discharge energy for high-resistance fault resolution. The single-capacitor architecture delivers lower maintenance overhead and superior cost-performance compared to multi-speed alternatives, making it the practical choice for organizations that test predominantly at 35kV and below without the need for voltage-level capacitor switching. For applications requiring multi-voltage capacitor selection, see the XHHV535-4TS (3-speed). For field-portable needs, see the XHHV535-2L (25kg) or XHHV535-4Z (35kg).
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