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Sonel Test Equipment

S-44 VLF (230 V) High Voltage Insulation Tester

S-44 VLF (230 V) High Voltage Insulation Tester

$42,774.55
$42,774.55
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Description

 

Test the condition of the cables with VLF or DC slow voltage  

The S-44 VLF high voltage insulation tester is a compact, robust and portable kit for testing medium voltage cables according to IEEE400, IEC 60502-2, CENELEC HD 620 and 621 and DIN VDE 0276/620 and 621. The test is carried out using the low electrical stress method, with a VLF (Very Low Frequency) voltage of 0.1 Hz.  

The VLF test is the fastest way to detect insulation damage. The S-24 VLF instrument can test cables with plastic insulation (XLPE, PE-, EPR) as well as paper and oil insulation (PILC). Testing with DC voltage is also possible.

Sonel offers online training course on the use of this product (instructional video and consultation with a specialist).

 

Technical data

 

Technical specification

S-24 VLF S-36 VLF S-44 VLF S-44 VLF S-57 VLF
Index WMGBS24VLF WMGBS36VLF WMGBS44VLF WMPAS44VLF WMGBS57VLF
Power supply 230 V (±10%),10 A, 50/60 Hz 230 V (±10%),10 A, 50/60 Hz 230 V (±10%),10 A, 50/60 Hz 110 V (100 V...127 V),15 A, 50/60 Hz 230 V (±10%), 10 A, 50/60 Hz
Output voltage 0…24 kVRMS VLF 0.1 Hz (option: 0.05 Hz + 0.02 Hz) ± 0…34 kV DC 0…36 kVRMS VLF 0.1 Hz (option: 0.05 Hz + 0.02 Hz) ± 0…52 kV DC 0…44 kVRMS VLF 0.1 Hz (option: 0.05 Hz + 0.02 Hz) ± 0…62 kV DC 0…44 kVRMS VLF 0.1 Hz (option: 0.05 Hz + 0.02 Hz) ± 0…62 kV DC 0…57 kVRMS VLF 0.1 Hz (option: 0.05 Hz + 0.02 Hz) ± 0…62 kV DC
Voltage waveshape
VLF similar sine-wave, symmetrical, with True RMS measurement similar sine-wave, symmetrical, with True RMS measurement similar sine-wave, symmetrical, with True RMS measurement similar sine-wave, symmetrical, with True RMS measurement similar sine-wave, symmetrical, with True RMS measurement
DC direct voltage, negative and positive polarity direct voltage, negative and positive polarity direct voltage, negative and positive polarity direct voltage, negative and positive polarity direct voltage, negative and positive polarity
Overcurrent trip (DC) 10 mA 10 mA 10 mA 10 mA 10 mA
Max. testable cable length, max. capacitance (VLF) up to 60 km (15 µF at 24 kVRMS, 0.02 Hz)* up to 60 km (15 µF at 18 kVRMS, 0.02 Hz)* up to 60 km (15.0 µF at 18 kVRMS, 0.02 Hz)* up to 60 km (15.0 µF at 6 kVRMS, 0.02 Hz)* up to 60 km (15.0 µF at 18 kVRMS, 0.02 Hz)**
Max. load at max. output voltage (VLF) and 0.1 Hz 5 µF at 24 kVRMS 2.4 µF at 36 kVRMS 1.5 µF at 44 kVRMS 1.0 µF at 44 kVRMS 0.9 µF at 57 kVRMS
Discharge - integrated automatic discharge device max. 9000 J max. 12500 J max. 12500 J max. 12500 J max. 12500 J
Voltage measuring range -40…0…40 kV accuracy ±1% -60…0…60 kV accuracy ±1% -70…0…70 kV accuracy ±1% -65…0…65 kV accuracy ±1% -70…0…70 kV accuracy ±1%
Current measuring ranges ±0…100 µA / 1 mA / 10 mA ±0…100 µA / 1 mA / 10 mA ±0…100 µA / 1 mA / 10 mA ±0…100 µA / 1 mA / 10 mA ±0…100 µA / 1 mA / 10 mA
Operating temperature -20…+45°C
-4…+113°F		 -20…+45°C
-4…+113°F		 -20…+45°C
-4…+113°F		 -20…+45°C
-4…+113°F		 -20…+45°C
-4…+113°F
Storage temperature -25…+70°C
-13…+158°F		 -25…+70°C
-13…+158°F		 -25…+70°C
-13…+158°F		 -25…+70°C
-13…+158°F		 -25…+70°C
-13…+158°F
Duty continuous operation continuous operation continuous operation continuous operation continuous operation
PC interface USB stick USB stick USB stick USB stick USB stick
Construction in two parts: operation unit and high voltage unit in two parts: operation unit and high voltage unit in two parts: operation unit and high voltage unit in two parts: operation unit and high voltage unit in two parts: operation unit and high voltage unit

 

*at a cable capacitance of approx. 0.25 µF/km

**at a cable capacitance of approx. 0.36 µF/km

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