Hippo Electrical Technology Co., Ltd. in the introduction of foreign advanced technology, based on the successful development of a suitable for 500kV and below XLPE cable according to GB/T11017-2008, GB/T12706-2008 and IEC60502-2005 standard for XLPE cable partial discharge test and pressure test the complete test system, the system of advanced technology, reliable performance, can replace imported products of the same voltage level. System includes: High pressure tuning reactors, double shielded electrostatic isolation transformers, high and low pressure filters, contact voltage regulator, voltage measurement divider injection pressure correction capacitors, partial discharge detector, local fault locator and so on. Complete system in the country has more than three hundred wire and cable manufacturing plant put into use, has been widely acclaimed by users.
1 system components and wiring diagram
1 - double shielded electrostatic isolation transformer China; - console; 3 - contact voltage appliances; 4 - low pressure filter; 5 - excitation transformer; 6 - High tuning reactors; 7 - voltage measurement divider; 8 - PD detector; 9 - PD fault Locator; 10 - high pressure filter; 11 - injecting high-pressure correction capacitors; 12 - cable test terminals; 13 - test
2 System Features
● PD system equipment level up: ≤ 2PC
● circuit quality factor: Q ≥ 40
● Fault level positioning accuracy: ≤ ± 2.5m (± 1%)
● The system voltage measurement accuracy: ≤ ± 3%
● The system has timed pressure, ARC instantaneous breakdown protection, overcurrent protection, interlock protection and various limit function. Tuning range can cover into a disk cable length 1000M section 1500MM2 of 550kV and below XLPE cable partial discharge pressure test and fault location.
3 The system shielded room and control room main technical parameters
● grounding resistance ≤ 1Ω or ooze in factories substation grounding resistance (in my company, under the guidance completed by the user)
● Insulation resistance ≥ 1000MΩ floor
● shielded room attenuation instructions: 10kHz-100kHz: 60dB-80dB,
100kHz-100MHz: 70dB-100dB
● shielded room size according to user needs identified, the wall of steel structure, wall by a steel plate welded continuously, the exterior surface of the decorative color steel sandwich with double electric control room with double color steel sandwich structure, steel doors and high-strength wear-resistant flooring
