Designed for: LV/MV Cable Fault Service Technicians, Utility Distribution Maintenance Crews, Electrical Testing Service Providers
Core Value: Compact pull-rod type DC impulse generator with 12μF built-in capacitor delivering 0-864J adjustable discharge energy — the portable, grab-and-go solution for routine fault detection on 12kV and below power cables with dual-mode output (impulse discharge + DC withstand voltage).
The XHHV515-8L is engineered for field technicians who need a compact, lightweight, single-operator portable impulse source for everyday LV and MV cable fault location work. Its pull-rod chassis design prioritizes ease of transport and rapid deployment — ideal for utility crews responding to multiple fault callouts per day and testing companies servicing urban distribution networks where maneuverability through tight access points is critical.
Unlike larger trolley-mounted surge generators that require vehicle ramp access and two-person handling, the XHHV515-8L’s pull-rod form factor enables true single-operator field mobility. The integrated telescoping handle and rugged chassis allow one technician to transport the complete instrument from vehicle to test point — through gates, down stairwells, and into congested substation bays where wheeled carts cannot navigate.
Operational Advantage: For utility crews handling 4-6 fault callouts per shift, the difference between a 2-minute setup (XHHV515-8L) and a 10-minute setup (trolley-type units with external capacitor connections) translates directly to more faults located per working day — and faster service restoration for customers.
Many surge generators require the operator to physically reconfigure cabling when switching between impulse discharge and DC withstand voltage modes — a source of connection errors and wasted time. The XHHV515-8L provides dedicated output ports for each mode:
| Output Port | Function | Use Case |
|---|---|---|
| HV Output (EMP) | Impulse discharge for cable fault pinpointing | Connect to cable under test for acoustic-magnetic thumping during fault location |
| HV Output (DC) | Continuous DC withstand voltage output | Connect for post-installation cable insulation verification and preventive maintenance testing |
A distinctive safety and diagnostic feature of the XHHV515-8L is its real-time kV voltmeter that indicates capacitor voltage even when the instrument is in standby mode — not just during active impulse discharge. This provides operators with continuous situational awareness of the stored energy state, eliminating the risk of accidental contact with a seemingly "off" capacitor bank that may still hold a dangerous residual charge.
| Control | Function |
|---|---|
| 1. Safety Ground | Instrument chassis earth connection — prevents casing electrification and personnel shock hazard |
| 2. Discharge Button | Manual internal charge dissipation when HV is off — secondary safety layer beyond automatic discharge |
| 3. Start / Zero-Position Indicator | Yellow LED confirms voltage knob at zero; press to enable HV output when indicator is lit |
| 4. Stop / HV Indicator | Immediate HV output cutoff; indicator lights during active high-voltage output |
| 5. Overcurrent Protection | Press to activate protection; auto-trips on overcurrent condition — reset after correction |
| 6. Voltage Adjustment | Turn fully counterclockwise to zero before start, then clockwise to increase output |
| 7. Time Setting | Configurable discharge time interval for automatic timed impulse mode during pinpointing |
| Application | Scenario |
|---|---|
| Cable Fault Pinpointing | Impulse discharge for acoustic-magnetic pinpointing on 12kV and below LV/MV distribution cables |
| DC Withstand Voltage Testing | Post-installation and post-repair cable insulation verification on LV and MV circuits |
| Pre-Commissioning Cable Verification | New cable circuit testing before energization — detects installation damage and joint defects |
| Electrical Equipment DC Testing | DC withstand voltage testing on other electrical equipment — transformers, switchgear, bushings |
| Routine Preventive Maintenance | Scheduled cable condition assessment for urban networks, industrial plants, commercial facilities |
Overall Rating
Rating Snapshot
The following is the distribution of all ratingsAll Reviews