Huazheng HZTCW-300kVA/2×300kV Power frequency test transformer complete test device
The complete set of 300kVA/2×300kV power frequency test transformer is suitable for testing products such as switches, bushings, transformers, transformers and insulators of 220kV and below for power frequency withstand voltage test and partial discharge measurement.
Ⅱ Following the standard
JB/T9641－1999
Testing transformers
GB/T.311.1-1997
Insulation co-ordination for high voltage transmission and distribution equipment
GB/T16927.1-1997
High-voltage test techniques. Part 1: General test requirements
GB/T16927.2-1997
High-voltage test techniques. Part 2: Measuring systems
Ⅲ Composition of equipment
1.HZTCW-150/300-II power frequency series connecting test transformer superior, 1 set
2.HZTCW-300/300－I power frequency series connecting test transformer lower stage, 1 set
3.TYDZ-100/0-650 single-phase column voltage regulator, 1 set
4.GWC-300/600 power frequency capacitive voltage divider( Coupling capacitor), 1set
5.GR-0.5/600 power frequency protection resistor, 1set
6.HZ-AC20 power frequency console, 1 set
7.DGK-300KVA/600V compensation reactor, 1set
Ⅳ Technical parameters of main products
1.HZTCW-300/2×300 Power frequency test transformer of series connecting
Model number: HZTCW-300/2×300
Number of phases: single phase
Frequency: 50Hz
Rated capacity: 300KVA
Rated input voltage: 380V
Rated output voltage: 600KV
Rated input current: 500A
Rated output current: 0.5A
Impedance voltage: ≤15%
Waveform distortion rate: ≤5%
Unevenness of cascade voltage distribution of two transformers: ≤5%
Allowable running time: 30 minutes running at 100% rated voltage and 100% rated current; continuous running at 2/3 rated voltage and 2/3 rated current.
Partial discharge capacity: partial discharge capacity at 100% rated voltage <10PC, partial discharge capacity at 80% rated voltage <5PC.
2.TYDZ-100/0～650 single-phase column voltage regulator
Model number: TYDZ-300/0～600
Number of phases: single phase
Frequency: 50Hz
Rated capacity: 600KVA
Rated input voltage: 380V
Rated output voltage: 0-650V
Waveform distortion rate: ≤5%
Allowable running time: same as transformer
3.GWC-300/600 power frequency capacitive voltage divider(Coupling capacitor)
Model number: GWC-300/600
Rated frequency: 50Hz
Nominal capacity: 300PF±10%
Rated voltage: 600KV
Nominal partial pressure ratio: 1000:1
Dielectric loss: <0.5%
Measurement accuracy: 1%
Allowable running time: same as transformer
4.GR-0.5/600 power frequency protection resistor
Model number: GR-0.5/600
Rated frequency: 50Hz
Rated voltage: 600KV
Resistance value: 10KΩ
Rated current: 0.25A
Allowable running time: same as transformer
5.HZ-AC20 Power frequency console
Model number: HZ-AC20
Features:
(1) Capacitance voltage divider measurement voltmeter: accuracy 1%, with three and a half digits;
(2) The console is equipped with transformer input winding ammeter and voltmeter, and output winding ammeter.
(3) There is an overcurrent protection function in the console.
(4) The console is equipped with a pressure timer.
(5) The console has a zero protection function.
6.DGK-300/0.6 Compensation reactor
Model: DGK-300/0.6
Rated capacity: 300kVar
Rated current: 500A
Rated voltage: 0.6kV
Rated frequency: 50Hz
Allowable running time: same as transformer