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Very Low Frequency High Voltage Cable Testing Equipment Vlf Cable Tester

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
2	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 :

Electronic frequency conversion
Microprocessor Controlled
Two HV boosters, 90KV output in series; or 40KV/50KV for single one
Large LCD display
Sine Wave Output
Overvoltage protection, action time is less than 20ms
Over current protection for both input and output side, action time is less than 20ms
Output current/Voltagewave form is sampled at high voltage side directly
HV Current Limiting Resistor inside
Micro-printer inside
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: LWH 323174323	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: LWH 357210365	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: LWH 357220370	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: LWH 357240390	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 Testing Equipment 0

2. For Generator stator under 50KV test voltage
Very Low Frequency High Voltage Cable Testing Equipment , Vlf Cable Testing Equipment 1

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

Ｕ_test＝1.414*βKＵ₀,

U_test---- 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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Categories	High Voltage Cable Testing Equipment
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