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WUHAN FANKE HAIWO HIGH VOLTAGE TECHNOLOGY CO.,LTD.
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Light Weight VLF High Voltage Testing Vlf Cable Testing Equipment 0~ 50KV

WUHAN FANKE HAIWO HIGH VOLTAGE TECHNOLOGY CO.,LTD.

Light Weight VLF High Voltage Testing Vlf Cable Testing Equipment 0~ 50KV

Brand Name : Fanke High-voltage

Model Number : VLF-50KV/0.1Hz

Certification : ISO9001

Place of Origin : China

MOQ : One Set

Price : Negotiable

Payment Terms : T/T

Supply Ability : 20 sets / month

Delivery Time : 10-15working days

Packaging Details : Export standard wooden case with fumigation free

Test object : Cable Tesing and Generator Testing

Test Item : AC Withstand Voltage Test

Test Freq. : 0.1Hz, 0.05Hz, 0.02Hz

Component : Controller,HV booster,Compensation capacitor Load

Test Voltage : 0~ 50KV

Accuracy : ± (3% of full scale +0.5 KV)

Working Time : 60mints

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50KV Very Low Frequency Test Set For Cable , VLF Cable Tester , HV Test , Generator Insulation

I. Application :

Model VLF-50KV/0.1Hz is designed to perform on-site withstand voltage test with very-low frequency test frequency 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.

VLF hipot tester combines modern advanced digital variable frequency technology and micro computer control together, therefore, it can realize the full automatic voltage boost, stepdown, measurement and protection as well as the manual intervention in the process of automatic voltage boost. The full electronic design ensures the small size and light weight. The big LCD screen ensures the clear and visual display, and can display the output wave form. The printer outputs test reports

The test set consists of a control box, one HV boosters, a compensation capacitor and a discharge rod.Based on electronic frequency conversion and microprocessor controlled technology, it has excellent performance on cable or generator testing.


II. Supply list of this Model:

Sn

Description

Qty.

1

Control unit

1

unit

2

50KV 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. Technical Feature
  1. Data of current, voltage, wave form can be directly sampled at high voltage side, so the data is real and accurate.
  2. Overvoltage protection: If the output exceeds the set limit of voltage, the instrument will shut-down to protect itself, the actuation time is less than 20ms.
  3. Overcurrent protection: it is high-low voltage dual protection in the design, the accurate shut-down protection can be made according to the set value at high voltage side; If the current on low voltage side exceeds the rated current, the instrument will take shut-down protection, the actuation time are both less than 20ms.
  4. A high voltage output protective resistor is provided in the voltage boost body in the design and this eliminates the need of additional protective resistor connected outside.
IV. Universal Technical Data
  1. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz
  2. Measurement accuracy: 3%
  3. Positive and negative voltage peak errors: ≤ 3%
  4. Voltage wave form distortion: ≤ 5%
  5. Use condition: indoor and outdoor; temperature: -10℃+40℃
  6. Humidity: ≤ 85%RH
  7. Power: AC50Hz, 220V ±5%
V. 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


NOTE : Test Voltage Standard

1.For cable test

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);:


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