Atec High-Voltage-VLF-28CMF User Manual

Page 8

PEAK

KILOVOLTS

CABLE CAPACITANCE

MICROFARADS

6.0

OUTPUT PEAK MILLIAMPERES

SCOPE

POS

NEG

START
TIMER

METER

μF

CAPACITANCE

SCALE X10

PUSH TO READ

CAP

ISO 9001: 2008

www.hvinc.com

The ADL-1 data logger is designed to monitor, record, and wire-

lessly download all test data from an HVI Very Low Frequency tes-

ter to a computer. Users of

HVI VLF products now have

the best of both worlds: eco-

nomical and simple to oper-

ate VLF testers along with full

test data collection. Use a lap-

top on-site to watch and record

the test or store all results in the

ADL-1 for later downloading.

Windows compatible only.

Current HVI VLF units

can be modified to use the

ADL-1. One interface cable

connects the data logger to

the VLF. The ADL-1 comes

equipped with 802.11g wireless

communications, which is backwards compatible with 802.11a & b,

and an Ethernet connection. Internal memory can record approxi-

mately 40 hours of testing.

Accessories

Cable Reels

100’ HV &

Ground Cables

Hand Truck for
VLF-4022CM(F),
VLF-6022CM(F),
& VLF-90CMF

VLF Cable Burning

The VLF-50CMF, VLF-65CMF, VLF-12011CMF, & the VLF-200CMF models are equipped with a Cable Burn mode. A VLF

burner is one of the most effective methods of reducing a cable fault’s impedance, or arc-over voltage, in order to permit the use

of lower voltage and energy rated fault locators – thumpers. For instance, the VLF-12011CM can be used to burn down faults on

138kV cable to lower the arc-over voltage to where the HVI CDS-3632U thumper can easily fault locate, with its 9/18/36 kV @

3200 joules discharge rating.

The VLF hipot applies its voltage to the faulted cable. The voltage output raises to the arc-over level and the cable arcs. The

current of the VLF and the stored energy in the cable discharges into the fault. This process continues, but now in the opposite

polarity, as the sine wave output of the VLF continues. This arcing of the cable fault repeatedly in opposite polarities, discharging

the stored energy in the cable, rapidly reduces the fault voltage.

1M/NOV/2010

CDS-2010U

CDS-3632U

0 – 5/10/20 kV Hipot/Thump

0 – 9/18/36 kV Hipot/Thump

0 – 400/200/100 mA Burn

0 – 280/140/70 mA Burn

Full 1000 Joules on each tap

Full 3200 Joules on each tap

6 – 10 Second Discharge Rate

Use any TDR

HVI can mix and match its VLF and Thumper

products to deliver a module that covers all your

VLF test and fault locating needs into one easily

mounted package. Just drop into a van or truck and

you’re done – instant test van.
Pictured is one containing our VLF-6022CM (0-

60 kV), Automatic Data Logger for VLF, our CDS-

3632U thumper (9/18/36 kV @ 3200 Joules), TDR/

Radar, & Fault Pinpointing device – a complete

package for your cable needs. This model is perfect

for Network Systems and Wind Farm cables.

VLF Testing & Fault Locating Modules – Van Ready

Cable Fault Locators – Constant Energy