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Technical Specification: VLF 28, VLF 40 / VLF 40P, VLF 60 / VLF 60P

Introduction

VLF testing is the proven replacement for the traditional DC Hipot Acceptance or 'Proof' test. With more than 700 very Low Frequency (VLF) units sold, and over 16 years
of field use, HDW offers the only VLF units approved under both American and European recommendations for VLF testing (IEEE 400.2, VDE 0296).

Our VLF technology is the only on the market that replicates the stress of 'Operational AC' voltage

 
 

VLF Output voltage:
0-28 kV eff  (RMS) [VLF 28]
(3.2 per unit for 15 kV cable)
(1.9 per unit for 25 kV cable)
 0-40 kV eff  (RMS) [VLF 40]
(2.7 per unit for 25 kV cable)
(1.9 per unit for 35 kV cable)
0-60 kV eff  (RMS) [VLF 60]

(3.0 per unit for 25 or 35 kV cable)

DC Output Voltage:
0-28kV [VLF 28]
0-60kV [VLF-40]
0-80kV [VLF-60]

Testable Cable Capacity:
4.4 µF max. / 28 kV eff
4.4 µF max. / 40 kV eff  (P Model)
2.2 µF max. / 40 kV eff  
4.4 µF max. / 60 kV eff  

Frequency:
0.1 Hz

Voltage Shape:
Cosine Rectangular Wave (Patented)

Change Over Slope
Approx. 5 ms

Discharge Unit:
Safely grounds cable under test
integrated, 4.4 µF in 5 s [VLF 28/40]
integrated, 1.5 µF in 2 s [VLF 60]

Power Supply:
120 V, 60 Hz, approx. 5 A
230 V, 50 Hz, approx. 2.5 A

Operating Temperature:
 -20°C to +40°C
(-4°F to +104°F)

Dimensions:
(W x H x D) = 22" x 40" x 17"

Weights:
55 lb. ea., upper & lower module [VLF 28]
105 lb., upper module [VLF 40]
105 lb., upper module [VLF 60]
110 lb., lower module [VLF 40]
130 lb., lower module [VLF 60]
 
Options:

Data Logging
Programmable test cycle
Leakage Current Measurement
(0-12mA, VLF 28) (0-7 mA, VLF 40)
(0-5 mA, VLF 60)
Automatic Breakdown recognition
Built-in Printer



Cable Master Inc. 160 Pony Dr. #6A, Newmarket, ON, L3Y 7B6
905-715-7303 | Toll Free: 877-715-7303 | Fax: 905-715-7305 info@cablemasterinc.com