90KV Very Low Frequency VLF High Voltage Testing Set For Cable And Generator

Brand Name:Fanke High-voltage
Certification:ISO9001
Model Number:VLF-90KV/0.1Hz
Minimum Order Quantity:One Set
Delivery Time:20~30 working days
Payment Terms:L/C, T/T
Contact Now

Add to Cart

Active Member
Location: Wuhan Hubei China
Address: Layers Building 2,N0.2-2 Guannan Science&Technology Industrial Park, East Lake High-Tech Development Zone,Wuhan ,China
Supplier`s last login times: within 39 hours
Product Details Company Profile
Product Details

90KV Very Low Frequency High Voltage Test Set For Cable And Generator , AC High Voltage Testing


I. Product Description :

This test set model VLF-90KV/0.1Hz is designed to perform on-site withstand voltage test with very-low frequency technology for power generators or 45KV and below XLPE power cable.Compared with Hipot test set at main power frequency, VLF HV Test Set just needs much small test power capacity(About 1/500 in theory). Its size and weight also is decreased greatly. Specially the appearance of surveillance can discover the generator insulation abnormal phenomena such as surface corona, discharge and so on.


Based on electronic frequency conversion and microprocessor controlled technology, Model VLF-90KV/0.1Hz has excellent performance.
It is prohibited to boost voltage without load, or to connect with resistive load. If the specimen capacitance is less than 0.05uF, the test set output waveform will be bad. For better performance, optional capacitor is necessary to connect.


Until now , the designed test set also forms many different serialized model according to different withstand test applications through HV booster number of configurations in each set, The alike model can see other typical model at following clause.


II. Supply list of this set:


SnDescription

Quantity


1Control unit1unit

2

50KV HV Booster1unit
40KV HV Booster1unit
3Discharging rod1unit
4Load Capacitor, 0.04µF1unit
5HV Test/Connection Cables1set
6Earth cable1unit
720A Fuse5unit
8Print paper2unit
9Manual1unit
10Factory test report1unit

III. Product Feature :

  1. Electronic frequency conversion
  2. Microprocessor Controlled
  3. Two HV boosters, 90KV output in series; or 40KV/50KV for single one
  4. Large LCD display
  5. Sine Wave Output
  6. Overvoltage protection, action time is less than20ms
  7. Over current protection for both input and output side, action time is less than20ms
  8. Output current/Voltagewave form is sampled at high voltage side directly
  9. HV Current Limiting Resistor inside
  10. Micro-printer inside
  11. Output voltage will not be affected by capacitive current during test since closed-loop negative feedback design


IV. General Technical data:

  1. Output: 0~ 90KV(peak), continuously adjustable, output by shielded cable
  2. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz
  3. Load range: 0.1Hz, ≤0.5μF ; 0.05HZ,≤0.1μF ;0.02HZ ≤2.5μF;
  4. Measurement accuracy: 3 %
  5. Positive and negative voltage peak errors: ≤ 3%
  6. Voltage wave form distortion: ≤ 5%
  7. Power supply fuse tube:20A
  8. Time range:0-99min
  9. Power Input:220V±5%,50/60Hz, stability of frequency: fluctuation less than 0.5%
  10. Operation condition: Indoor and outdoor;
  11. Temperature: -10C--+40C;
  12. Humidity: ≤ 85%RH 7.
  13. Controller:356mm×280mm×220mm, 4kg,1 Piece
  14. 40KV High voltage Booster:320mm×188mm×360mm,25kg, 1 Piece
  15. 50KV High voltage Booster:320mm×188mm×360mm,50kg, 1 Piece


V. Measuring and control software panel :


VI.Test Connection Figure


1. For XLPE cable under 90KV test voltage



2. For Generator stator under 50KV test voltage



VII. Other typical model


ModelVoltage rangeTest FrequencyMaximum load
VLF-30KV/0.1Hz0~ 30KV0.1HZ, 0.05HZ, 0.02HZ5.5μF
VLF-40KV/0.1Hz0~ 40KV0.1HZ, 0.05HZ, 0.02HZ5.5μF
VLF-50KV/0.1Hz0~ 50KV0.1HZ, 0.05HZ, 0.02HZ5.5μF
VLF-80KV/0.1Hz0~ 80KV0.1HZ, 0.05HZ, 0.02HZ2.5μF
Special requirement can be made by order

VIII.Test Voltage standard by this test set


1 For MV and below class XLPE cable:

Test peak voltage formula: Umax=3U0,

0Single-phase rated voltage of cable

Test time :60mints


2 For generator stator

test=1.414*βKU0,

Utest---- 0.1Hz peak test voltage (kV);

β-------0.1Hz and 50Hz voltage equivalent factor, usually taking 1.2;

K------ Usually take 1.3 to 1.5, generally take 1.5;

Uo----- Generator stator windings rated voltage (kV);:


China 90KV Very Low Frequency VLF High Voltage Testing Set For Cable And Generator supplier

90KV Very Low Frequency VLF High Voltage Testing Set For Cable And Generator

Inquiry Cart 0