HVHIPOT GDYT-5/10 5kVA 10kV Partial Discharge Test System

Product Description

GDYT-5/10 Partial Discharge Test System 5kVA/10kV AC


General information

GDYT-5/10 Partial Discharge Test System is mainly used for testing frequency voltage insulation level of various insulation materials, insulation structure and electrical products, also as partial discharge frequency testing power supply for testing object such as transformer, mutual inductor and lightning arresters. It is widely used in electrical manufacturing, power operation departments, research institutes and universities.

The system includes,
 

1. Automatic Hipot Test Control Table GDYT-5kVA/10kV         
2. PD-free Gas type transformer YDQW-5kVA/10kV    
3. Coupling capacitor TAWF-5/800pF         
4. Protective resistor GR-5kVA           
5. Isolation filter LBQ-5kVA/200V                  
6. Partial discharge detector GDJF-2008  optional

   


II. System principle diagram


K1: Circuit breaker
TY: Voltage regulator
GK: Compensation reactor
LBQ: Anti-interference filter
TPU: Fast Over-voltage protection device(Optional)
B1: Testing transformer
R: Protective resistor
KZ: Control table
C1&C2: Capacitive divider with Coupling capacitor


III. System Specifications


Specifications

System Specifications
 

1. Power supply: 220V±10%,50HZ
2. Rated Capacity: 5kVA                                         
3. Output Voltage: 10kV, current: 500mA                                 
4. Short-circuit impedance: <18%
5. Operation time: 30mins@100% rated voltage and current.

             Continuous working@ 2/3 rated voltage and current.

1. Wave form distortion rate:<3% when voltage regulator input voltage distortion rate <3%.
2. PD value:≤5pC @ 100% rated voltage

1. Control unit        GDYD-5kVA/10kV

Features
 

1. 7inch color LCD screen, with PLC automation control.
2. HV Voltage, LV voltage, LC current measured at the same time, with high precision sensor and high-performance collection chip

1. Automatic mode and manual mode for option.
2. Display HV voltage, LV voltage, LV current, time and withstanding result.
3. Over-voltage and over-current protection. Output voltage, HV current upper limit, LV current upper limit, and timing can be set.
4. Zero-starting function. The test can proceed after the voltage is back to zero.
5. Store up to 8000pcs data in 3months. It has a USB port to upload data to a USB disk.
6. When the setting voltage arrives, it will timing automatically. After timing, the voltage will be back to zero.
7. When the LV current is over-setting value, the voltage will be cut off automatically and it will be back to zero. When the HV current is over-setting value, the test object will be cut off and test can proceed continuously.
8. With anti-interference ability, suitable for the electromagnetic environment.
9. With wheels for both the control unit and HV unit, easy to move.

Specifications
 

1. Power: AC220V±10%, 50Hz±1
2. Capacity: 5kVA
3. Output voltage: AC 0-250V
4. Rated output current: Max. 25A, resolution 0.1A
5. HV voltmeter range: 0-10kV AC, resolution 0.01kV
6. HV current measurement range: 0-500mA, resolution: 1mA
7. Timing range: 0-999s
8. Voltage and current accuracy: ≤3%(F.S)±2digits
9. Environment temperature: -20ºC to 50ºC

2. PD-free Gas testing transformer (HV unit)  YDQW-5kVA/10kV
 

1. Rated capacity: 5kVA
2. Input voltage: AC 220V±10%
3. Input current: AC 0-250A
4. Output voltage: AC 0-10kV
5. Output current: AC 0-500mA

1. Measurement ratio: 100:1, error ±1%

1. Impedance: ≤12%
2. No-load current: ≤10%
3. PC value on rated voltage: ≤5pc
4. Voltage distortion factor: <3%
5. Insulation dielectric: SF₆ gas
6. Dimensions & Weight: 360mm*360mm*600mm, 38kG

 

1. Coupling capacitor     TAWF-5/800

 

1. Rated frequency: 50Hz
2. Standard capacitance: 800pF±10%
3. Rated voltage: 10kV
4. Voltage ratio: 500/1
5. Dielectric loss: <0.5%
6. Measurement accuracy: 1%
7. Permitted operation time: same with testing transformer
8. PD value: ≤5pc on 100% of rated voltage, ≤3pc on 80% of rated voltage.
9. Structure type: insulating shell oil-paper capacitor structure: composed of the top cover, voltage-equalizing ring, capacitor body, mobile base, low voltage arm, etc.

 

1. Protective resistor    GR-5

 

1. Rated frequency: 50Hz
2. Rated voltage: 10kV
3. Resistance: 5kOhm
4. Rated current: 0.5A

1. Permitted operation time: same with testing transformer
2. Temperature rise: H class (135ºC)
3. Partial discharge: ≤3pC at 100% rated voltage

             ≤2pC under 80% rated voltage

1. Structure type: The resistor is wound with an enameled resistance wire on an epoxy resin board, and adopts a honeycomb structure, so that the heat emitted by the heating wire can be fully exchanged with the air, reducing the temperature of the resistor when it is in use, and ensuring that the strength of the resistance parent material does not decrease when heated. Both ends are connected to the transformer and the voltage divider with connecting pipes.

 

1. Isolation filter         LBQ-5

 

1. With L-C filter loop circuit, and built-in filter compensation device
2. Rated capacity: 5kVA
3. Rated voltage: 220V±10%
4. Rated current: 25A
5. Impedance: ≤12%
6. No-load current: ≤10%
7. Frequency: 50Hz
8. Attenuation: 10kHz-100kHz ≥20dB

             100kHz-30Mhz ≥60dB

1. Permitted operation time: same with testing transformer