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80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
Specifications
Brand Name :
Fanke High-voltage
Model Number :
VLF-80KV/0.1Hz
Certification :
ISO9001
Place of Origin :
China
MOQ :
One Set
Price :
Negotiable
Payment Terms :
L/C, T/T
Supply Ability :
20 sets / month
Delivery Time :
20~30 working days
Packaging Details :
Export standard wooden case with fumigation free
Test Principle: :
Very-low frequency technology principle
Usage :
0.1Hz Withstand Voltage test for 35KV and below MV power cable and generator
Design Feature :
Two HV boosters, 30KV/50KV for single one
Component :
Controller，HV booster，Compensation capacitor Load
Test Frequency :
0.1Hz, 0.05Hz, 0.02Hz
Max.Test Voltage :
0~ 80KV(peak), continuously adjustable
Load Range: :
0.1Hz, ≤0.5μF ; 0.05HZ,≤0.1μF ;0.02HZ ≤2.5μF
Test Accuracy :
No Less Than 3%
Output Waveform :
Good Sine Wave,Voltage, Waveform distortion ≤ 5%
HV Booster Using Way :
Single or In Series Connection
Duty Cycle :
60mints
Description

80KV Very Low Frequency High Voltage Test Set For Cable And Generator , AC High Voltage Testing

I. Product Description Of VLF Test Technology :

Withstand voltage test is an essential preventive test for electrical equipment. It is divided into two parts: AC and DC withstand voltage test. AC test technology principle can be further divided into power frequency, variable frequency (VF)and 0.1Hz very low frequency test(VLF), among which the last one is highly recommended by IEC, due to its remarkable advantages under 50KV test voltage.

II. Technogy feature advantage at DC test /power frequency test/VF test/ VLF test

Aspects DC Power Frequency Variable Frequency 0.1Hz VLF
Equivalency Poor Good Good Good
Insulation Damage strong slight slight slight
Operation Safety relatively low relatively low relatively low high
Wiring Difficulty complicated complicated most complicated simple
Volume smallest largest large small

See from the above table , VLF test is the substitute for power frequency test. It is suitable for testing electrical equipment with large capacitance.

III. Product advantage and Feaure

  1. Small size and light weight. Big LCD screen and built-in printer.
  2. 0.1Hz, 0.05Hz and 0.02Hz can be chosen, which ensures a wide test range.
  3. It realizes the fully automatic voltage boost, step-down, measurement and protection as well as the manual intervention in the process of automatic voltage boost.
  4. Overvoltage protection and over-current protection. Action time is no longer than 20ms.
  5. Data of current, voltage, wave form can be directly sampled at high voltage side, so the data is real and accurate.
  6. 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.
  7. Closed-loop negative feedback circuit is adopted. No capacity rising during outputting.


IV. General Technical data:

  1. Peak voltage: 50kV
  2. Test frequency: 0.1Hz, 0.05Hz and 0.02 Hz (selectable)
  3. Fuse: 10A
  4. Maximum load capacity: 0.5μF at 0.1Hz; 1μF at 0.05Hz; 2.5μF at 0.02Hz
  5. Power supply: 220V ±10%, 50Hz ±5% (If using a portable generator, make sure the output voltage and frequency are stable. Power >3kW.)
  6. Output voltage accuracy: peak voltage instability ≤1%; frequency instability ≤3%; waveform distortion: <5%.
  7. Working environment: indoor or outdoor; -10℃-+40℃; 85%RH
  8. Weight: Control unit - 5kg; HV unit: 48kg

Remarks: Capacitance of test object can not be larger than the maximum value of the test instrument. If capacitance of test object is smaller than 0.05μF, the hipot should be equipped with an auxiliary device (supplied by HV HIPOT at your option).


V. Other typical model

Model Voltage range Test Frequency Maximum load
VLF-30KV/0.1Hz 0~ 30KV 0.1HZ, 0.05HZ, 0.02HZ 5.5μF
VLF-40KV/0.1Hz 0~ 40KV 0.1HZ, 0.05HZ, 0.02HZ 5.5μF
VLF-50KV/0.1Hz 0~ 50KV 0.1HZ, 0.05HZ, 0.02HZ 5.5μF
VLF-80KV/0.1Hz 0~ 80KV 0.1HZ, 0.05HZ, 0.02HZ 2.5μF
Special requirement can be made by order

VI.Test Voltage standard by this test set

1 For MV and below class XLPE cable:

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

testing a rectifier

,

power tester

,

high voltage impulse test
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80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz

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Product Detail
Brand Name :
Fanke High-voltage
Model Number :
VLF-80KV/0.1Hz
Certification :
ISO9001
Place of Origin :
China
MOQ :
One Set
Price :
Negotiable
Contact Supplier
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz
80KV VLF High Voltage Testing Machine VLF AC Hipot Tester 0.1Hz 0.05Hz 0.02Hz

WUHAN FANKE HAIWO HIGH VOLTAGE TECHNOLOGY CO.,LTD.

Active Member
7 Years
hubei, wuhan
Since 2003
Business Type :
Manufacturer, Exporter, Seller
Main Products :
High Voltage Cable Testing Equipment, AC Resonant Test System, AC Hipot Test Equipment
Total Annual :
6000000-10000000
Employee Number :
100~120
Certification Level :
Active Member
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