Pull-Rod High Voltage Surge Generator — 35kV Class| XHHV535-2L Model: XHHV535-2L
Designed for: Power Utility Cable Fault Teams, 35kV Distribution Network Maintenance Contractors, Industrial High-Voltage Testing Service Providers
Core Value: Pull-rod portable DC impulse generator with 2μF capacitor delivering 0-1024J discharge energy for 35kV and below cable fault detection. Triple protection + zero-position interlock + real-time standby voltmeter — full 35kV impulse capability in a single-operator portable form factor.
Who This Equipment Is For
The XHHV535-2L is built for professional cable fault location teams who need 35kV-class impulse discharge capability without the logistics of a trolley-mounted unit. Its pull-rod chassis delivers the same high-voltage performance as bulkier cart-type generators while enabling single-operator deployment in locations with restricted access — substations with stair-only access, cable trenches with narrow approach paths, and multi-story industrial facilities where elevator dimensions limit equipment size.
135kV Utility ContractorsFull 35kV impulse discharge in a pull-rod portable form factor. No trolley, no ramp, no two-person lift — one technician, one instrument, one trip from the vehicle.
2Industrial HV Electricians35kV cable networks in refineries, chemical plants, and steel mills. Compact chassis navigates process-area access restrictions where trolley units are prohibited.
3Testing Service CompaniesVersatile 35kV-capable impulse source for mixed-voltage service contracts. Triple protection means fewer equipment repair claims and higher fleet availability.
4Wind & Solar Farm O&M Teams35kV collector cable fault location on renewable energy sites. Pull-rod portability handles turbine tower access and uneven terrain between array sections.
Key Specifications
Built-in Capacitor2 μF
Discharge Energy0–1,024 J
Voltage Rating≤35 kV
ProtectionOC + OV + OT Triple
Short-CircuitDirect to Ground OK
Meter DisplayDual 1.5-Class Meters
Safety InterlockZero-Position Start
Standby VoltmeterReal-Time kV Readout
Form FactorPull-Rod Portable
35kV Capability in a Pull-Rod — No Compromise on Voltage
The defining engineering achievement of the XHHV535-2L is delivering full 35kV impulse discharge capability in a pull-rod portable chassis. Conventionally, 35kV-class surge generators require trolley-mounted enclosures with substantial clearance distances, heavy-gauge internal wiring, and oversized capacitor banks — all of which drive weight and bulk. The XHHV535-2L achieves the same voltage rating through high-frequency solid-state HV technology, miniaturized high-reliability circuit design, and an integrated charging/discharging architecture that eliminates external interconnecting HV cabling and separate capacitor modules.
Operational Impact: A 35kV-capable surge generator that one technician can carry from the vehicle to the test point — through gates, up stairs, across cable trenches — is a significant operational advantage for field service organizations. It reduces vehicle requirements (no lift-gate needed), speeds up per-job deployment time, and eliminates the scheduling constraint of needing two-person crews for routine 35kV fault callouts.
Safety Systems — Layered Protection for 35kV Operations
| Safety Feature |
How It Protects |
| Zero-Position Start Interlock |
Voltage adjustment knob must be at zero before HV output can be enabled — prevents accidental 35kV startup at full voltage |
| Real-Time Standby Voltmeter |
kV meter displays capacitor voltage continuously — even when the instrument is stopped. Operator always knows energy state before approaching terminals |
| Triple Auto Protection |
Independent overcurrent, overvoltage, and overheat circuits monitor output simultaneously — automatic trip on any fault condition |
| Direct Short-Circuit Tolerance |
Output stage engineered to survive dead-short conditions during aggressive fault conditioning — no damage, no fuse replacement, just reset and continue |
| Manual Discharge Capability |
Controlled dissipation of residual capacitor energy via operator command — secondary safety layer beyond automatic discharge circuit |
| Configurable Discharge Timing |
Arbitrarily settable discharge intervals — operator controls impulse cadence for optimal acoustic pinpointing without rushing or over-cycling |
How the Impulse Discharge System Works
The XHHV535-2L integrates a charging circuit and a discharging circuit within a single compact enclosure. The charging circuit samples HV cable voltage and routes it to a voltage regulation control loop — ensuring the 2μF energy storage capacitor charges precisely to the operator-selected level (0-35kV). The discharging circuit, triggered by the impulse mechanism, transfers stored energy through a precision-gapped high-voltage discharge sphere to the output terminal — generating a fast-rising DC impulse pulse that produces both the acoustic thump and electromagnetic transient required for TDR pre-location and acoustic-magnetic pinpointing.
The impulse magnet — an integrated assembly housing the DC high-voltage power supply, energy storage capacitor, and discharge sphere in a single modular unit — is the key to the XHHV535-2L’s compact form factor. By eliminating the interconnecting cables, separate capacitor banks, and external sphere gaps of traditional component-level setups, the impulse magnet achieves the same electrical performance in a fraction of the physical volume.
Applications
| Application |
Target Cable Type |
| Cable Fault Pinpointing |
35kV and below XLPE, PILC, and EPR insulated power cables — urban distribution, industrial feeders, and renewable energy collector circuits |
| DC Withstand Voltage Testing |
Post-installation and post-repair insulation verification on 35kV cables and electrical equipment including transformers and switchgear |
| High-Voltage Flashover Testing |
Controlled flashover induction for TDR waveform acquisition and fault pre-location distance measurement |
| Acoustic-Magnetic Synchronization |
Synchronized impulse discharge for precise fault point location using external acoustic and magnetic field receivers |
| Preventive Maintenance Assessment |
Scheduled cable condition evaluation — impulse response baseline trending for early detection of insulation deterioration in aging 35kV networks |
Safety & Operational Precautions
- Always connect instrument safety ground to a reliable earth point before operation — 35kV is lethal without proper grounding
- Verify zero-position interlock is engaged (knob fully counterclockwise) before connecting to the cable under test
- Monitor the real-time kV voltmeter during standby — never assume the capacitor is discharged without visual verification
- Do not bypass or disable any of the three protection circuits — they are safety-critical systems
- Allow adequate ventilation during extended impulse duty cycles — the 35kV output stage generates significant heat at maximum energy settings
- Only qualified 35kV-class high-voltage technicians may operate this equipment
- If any protection circuit trips, investigate the fault condition before resetting — repeated trips indicate a cable or equipment problem
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