Atec High-Voltage-VLF-28CMF - Manual (Page 8)

PEAK
KILOVOLTS
0
60
CABLE CAPACITANCE
MICROFARADS
0
60
0 6.0
OUTPUT PEAK MILLIAMPERES
SCOPE
POS
NEG
START
TIMER
60
30
10
METER
μF
mA
CAPACITANCE
SCALE X10
PUSH TO READ
X1
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 6 – 10 Second Discharge Rate
Use any TDR 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