AC and AC/DC
High-Pot Testers
AC and AC/DC
High-pot Testers
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Rapid production line testing to latest
UL standards
Extra safety features
Rugged design for ease of portability
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DESCRIPTION
AC and AC/DC High-Pot Testers available from Megger are
designed for safety and ease of operation, and readily adapt
to development, maintenance or production testing. Three
models are available: two ac and one ac/dc. The AC High-Pot
Testers feature a front-panel, NEMA 5-15R three-prong
output receptacle. Booted, alligator-clip output and return
probes are also supplied with all models.
Test voltage is continuously adjustable from zero to full
output, with a zero-start interlock. Leakage current trip
level may be adjusted from 0.3 to 12 mA by a front-panel
knob. Pushbuttons are provided to select one-second or
continuous testing, to turn off the high voltage and to reset
the instrument. All high-voltage connections are recessed
to prevent accidental contact with high voltage.
During testing, high voltage will automatically shut down
within 50 ms of arcing or exceeding the preset trip level.
Visual and audible alarms alert the operator upon failure.
The instruments also feature an interlock that prevents the
high voltage from being applied if the supply ground wire
is open or if the hot and neutral wires are interchanged. A
Tester Grounded lamp lights to confirm the instrument is
connected to a properly grounded power source.
The AC High-Pot Testers will automatically shut down if
ground circuit resistance of the test object exceeds 15
ohms at any time during testing. This feature may be
bypassed when testing double-insulated devices or when
using test probes. The AC/DC High-Pot Tester provides a
slide switch to select either ac or dc test voltage. The slide
switch safely covers the output jacks not in use.
APPLICATIONS
These portable instruments are used to test the dielectric
strength of electrical insulation and the ground circuit
continuity of three-wire appliances and other devices.
Biddle High-Pot Testers comply with most existing UL
requirements for dielectric withstand testing, including:
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UL 544 – Electric Medical and Dental Equipment
UL 982 – Motor-Operated Household Food Preparing
Machines
UL 1026 – Electric Household Cooking and Serving
Appliances
UL 1270 – Radio Receivers, Audio Systems, and
Accessories
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FEATURES AND BENEFITS
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Ground continuity check of three-wire devices with
high-voltage interlock (ac models only)
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Front-panel adjustable leakage current trip from 0.3 to
12 mA
One-second or continuous testing
Automatic failure shutdown, with visual and audible
alarms
Recessed high-voltage connections
Front-panel NEMA 5-15R three-prong receptacle on ac
models
Zero start/reset in event of failure
Meets UL 120-kΩ requirement
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AC and AC/DC
High-pot Testers
ORDERING INFORMATION
Item
AC High-Pot Testers
0 to 3 kV
0 to 4 kV
AC/DC High-Pot Tester, 0 to 4 kV ac/5 kV dc
Included Accessories
Test probes with alligator clips for ac models, includes one Cat. No. 25507 high-voltage probe
and one Cat. No. 25136 return probe, 4 ft [1.2 m]; for ac/dc models, includes one Cat. No. 25149
complete assembly, 4 ft [1.2 m]
Power cord
Instruction manual for 230315 & 230415
Instruction manual for 230425
Optional Accessories
Test probes with retractable tips, 4 ft [1.2 m]
High-voltage probe for ac models only
Return probe for ac models only
High-voltage and return probe set for ac/dc model only
Adapters, for conversion of output receptacles for use with twist-lock plugs
NEMA L5-15R twist lock
NEMA L5-20R twist lock
NEMA L5-30R twist lock
235300-1
235300-2
235300-4
230315-2
230315-3
230425-2
17032
AVTM23-1J
AVTM23-4J
230315
230415
230425
Cat. No.
UK
Archcliffe Road Dover
CT17 9EN England
T +44 (0) 1304 502101
F +44 (0) 1304 207342
UNITED STATES
4271 Bronze Way
Dallas TX75237-1088 USA
T 800 723 2861 (USA only)
T +1 214 330 3203
F +1 214 337 3038
OTHER TECHNICAL SALES OFFICES
Valley Forge USA, Toronto CANADA,
Mumbai INDIA, Trappes FRANCE,
Sydney AUSTRALIA, Madrid SPAIN
and the Kingdom of BAHRAIN.
Registered to ISO 9001:2000 Reg no. Q 09290
Registered to ISO 14001 Reg no. EMS 61597
AC_HIGHPOT_DS_en_V10
www.megger.com
Megger is a registered trademark
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