Product Introduction
The HMCXZ-16875kVA/225kV Variable-Frequency Series Resonance Test System is designed and manufactured for AC withstand voltage testing of 69kV, 138kV, and 230kV power cables and power systems. This fourth-generation AC withstand voltage resonance test unit features a 32-bit RISC CPU with a LINX core and a 7-inch true-color touchscreen.
The system primarily consists of the following components:
- Variable-frequency control power supply (CHXB-700kW/0.38kV)
- Excitation transformer (JLB-450kVA/2/4/6kV)
- High-Voltage Reactors (DK-5625kVA/75~225kV, 3 sections total)
- Capacitive Voltage Divider (FCR-250kV/1000pF)
- Resonance Compensation Capacitors (XZC-75~225kV/25000~75000pF)
Technical parameter of the whole test system
- Rated capacity: 16875kVA
- Input power supply: three-phase 380V voltage, frequency 60Hz
- Rated voltage: 225kV
- Rated current: 75A
- Working frequency: 20-300Hz
- Waveform distortion rate: Output voltage waveform distortion rate ≤ 1%
- Duration: Allow continuous 60 minutes under rated load(60 minutes of work and 60 minutes of rest)
- Temperature rise: After continuous operation for 180 minutes under rated load, the temperature rise is ≤ 65K
- Quality factor: Device Q ≥ 30 (f=45Hz)
- Protection function: It provides overcurrent, overvoltage, and sample flashover protection for the test object (see the variable frequency power supply section for details)
- Measurement accuracy: System RMS 1.5 level
- Working environment:
- Temperature: -15℃-45℃
- Relative humidity: ≤ 90% RH
- Altitude: ≤ 2500 meters
Relational table for usage of reactor
|
Equipment combinatiTested object |
Reactor 5625kVA/225kV-3 unit |
Excitation transformer Output selection |
|
|
69 kV cable, 0.21μF/km |
Length 5000m |
1 unit |
2kV |
|
138 kV cable, 0.32μF/km |
Length 5000m |
2 unit in Parallel |
4kV |
|
230 kV cable, 0.27μF/km |
Length 5000m |
3 units in Parallel |
6kV |
Products Details
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