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Very Low Frequency High Voltage Cable Testing Equipment Vlf Cable Tester

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Very Low Frequency High Voltage Cable Testing Equipment Vlf Cable Tester

Brand Name : Ningbo Suntech Power

Model Number : VLF-80KV/0.1Hz

Certification : ISO9001

Place of Origin : Ningbo，China

MOQ : One Unit

Price : Negotiable

Payment Terms : T/T

Supply Ability : 20 sets / month

Delivery Time : 15-20working days

Packaging Details : Export Standard Wooden Case With Fumigation Free

Test Principle : Very Low Frequency

Usage : AC Withstand Voltage Test

Test Object : 35KV And Below Cable And Generator

Component : Controller，HV Booster，Compensation Capacitor Load

Test Frequency : 0.1Hz, 0.05Hz, 0.02Hz

Max.Test Voltage : 0~ 80KV

Accuracy : ± (3% Of Full Scale +0.5 KV)

Max. Working : 60mints

High Light : underground cable detector, high voltage cable identifier

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Detailed Product Description
Test Principle:: Very Low Frequency Usage: AC Withstand Voltage Test
Test Object: 35KV And Below Cable And Generator Component: Controller,HV Booster,Compensation Capacitor Load
Test Frequency: 0.1Hz, 0.05Hz, 0.02Hz Max.Test Voltage: 0~ 80KV
Accuracy: ± (3% Of Full Scale +0.5 KV) Max. Working: 60mints
High Light:

underground cable detector

,

high voltage cable identifier

Very Low Frequency High Voltage Cable Testing Equipment , Acceptance Test Eqipment , VLF Cable Tester

I. Application :

Model VLF-80KV/0.1Hz is designed to perform on-site withstand voltage test with very-low frequency technology for power generators or 35KV 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.

The test set consists of a control box, two HV boosters, a compensation capacitor and a discharge rod.Based on electronic frequency conversion and microprocessor controlled technology, it 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 Model:

Sn Description

Quantity
1 VLF Measurement and Control unit 1 unit

2

 50KV HV Booster 1 unit
30KV HV Booster 1 unit
3 Discharging rod 1 unit
4 Load Capacitor, 0.04µF 1 unit
5 HV Test/Connection Cables 1 set
6 Earth cable 1 unit
7 20A Fuse 5 unit
8 Print paper 2 unit
9 Manual 1 unit
10 Factory test report 1 unit

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 than 20ms
  7. Over current protection for both input and output side, action time is less than 20ms
  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


VI. Optioonal Model and Test Range:

Model Peak voltage Measuring range Weight Test object range
VLF-30 30KV 0.1Hz,≤1.1µF

Controller: 4 kg

Booster: 25 kg

Size: L*W*H

323*174*323

10KV and below voltage

cable,generator
0.05Hz,≤2.2µF
0.02Hz,≤5.5µF
VLF-50 50KV 0.1Hz,≤1.1µF

Controller: 6 kg

Booster: 45 kg

Size: L*W*H

357*210*365

15.75KV and below voltage

cable, generator
0.05Hz,≤2.2µF
0.02Hz,≤5.5µF
VLF-60 60KV 0.1Hz,≤1.1µF

Controller: 6 kg

Booster: 50 kg

Size: L*W*H

357*220*370

18KVand below voltage

cable, generator
0.05Hz,≤2.2µF
0.02Hz,≤5.5µF
VLF- 80 80KV 0.1Hz,≤1.1µF

Controller: 8 kg

Booster: 90 kg

Size: L*W*H

357*240*390

35KV and below voltage

cable, generator


V.Test Connection Figure

1. For XLPE cable under 80KV test voltage

Very Low Frequency High Voltage Cable Testing Equipment Vlf Cable Tester

2. For Generator stator under 50KV test voltage
Very Low Frequency High Voltage Cable Testing Equipment Vlf Cable Tester

VI.Test Model Selection

1.For cable test

Test peak voltage formula: Ｕmax＝3Ｕ0,

Ｕ0＝Single-phase rated voltage of cable

Test time :60mints

2. For generator stator

Ｕtest＝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);:


Product Tags:

Low Frequency Cable Identifier 80KV

      

High Voltage Cable Testing Equipment 0.02Hz

      

Vlf Cable Tester

      
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