AC and AC/DC
High-pot Testers
■Rapid production line testing to latest
UL standards
■Extra safety features
■Rugged design for ease of portability
AC and AC/DC
High-Pot Testers
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 cur rent 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 aler t 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 instr ument 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 instr uments 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:
■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
FEATURES AND BENEFITS
■Ground continuity check of three-wire devices with
high-voltage interlock (ac models only)
■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-kΩrequirement
AC and AC/DC
High-pot Testers
Input
Standard: 120 Vac ±10%, 1 A, 50/60 Hz
Optional: Nominal 230-Vac, 50/60-Hz line is available on all models
at no additional charge. To order, add –47 to Cat. No.
Output
Maximum Output Current: 12.6 mA
Wave Shape
AC Models: Line
AC/DC Model: Maximum ripple 0.4% rms per mA at full
voltage
Accuracy
Applied Test Voltage: ±2%
Leakage Current: ±5%
SPECIFICATIONS
Optional pistol-grip leads AC High-pot Tester with supplied leads
CAT. NO. Model Applied Test Adjustable Leakage Output Dimensions Weight
Voltage Current Trip Level Receptacle
230315 0 to 3 kV 12.5 lb
(5.6 kg)
230415 0 to 4 kV
0 to 4 kV AC: 0.3 to 12 mA 13.5lb
0 to 5 kVdc DC: 0.43 to 17 mA (6.1 kg)
AC
AC/DC
0.3 to 12 mA Front-panel
NEMA5-15R 8 H x 9 W x 8.4 D in.
20.6 H X 23 W X 21 D cm
230425
AC and AC/DC
High-pot Testers
TESTER GROUNDED
LAMP
lights when tester is
connected to properly
wired supply.
VARIABLE
POTENTIOMETER
adjusts trip level of
leakage current.
INPUT POWER
CONNECTOR
RETURN TERMINAL
for removable return
test probe
HIGH-VOLTAGE
TERMINAL
for removable high-voltage
test probe
OUTPUT RECEPTACLE
used when testing
equipment having
an input plug
BYPASS SWITCH
is activated when test
probes are used instead
of panel receptacle or
when testing two-wire
equipment with receptacle.
INPUT CIRCUIT
BREAKER/POWER
SWITCH
lights when power is
available to the tester.
No fuses required.
VARIABLE
POTENTIOMETER
adjusts trip level of
leakage current.
INPUT POWER
CONNECTOR
FAILURE LAMP
lights when failure is
detected; buzzer sounds,
output trips off.
SLIDE SELECTOR
permits connection to
either ac or dc panel
jacks; automatically
connects selected
metering circuit.
HIGH-VOLTAGE
TERMINAL
for removable high-voltage
test probe
RETURN TERMINAL
for removable return
test probe
INPUT CIRCUIT
BREAKER/POWER
SWITCH
lights when power is
available to the tester.
No fuses required.
OUTPUT VOLTMETER
gives 2% accuracy
traceable to NIST
(certificate available).
FAILURE LAMP
lights when failure
is detected; buzzer
sounds, output
trips off.
PUSHBUTTON
for ONE-SECOND
HIGH-VOLTAGE TEST
HIGH-VOLTAGE
TEST PUSHBUTTON
for timed tests
VOLTAGE CONTROL
SAFETY INTERLOCK
requires voltage control
be reset to zero before
test leads can again
be energized.
TESTER GROUNDED
LAMP
lights when tester is
connected to properly
wired supply.
OUTPUT VOLTMETER
gives 2% accuracy
traceable to NIST
(certificate available).
PUSHBUTTON
for ONE-SECOND
HIGH-VOLTAGE TEST
HIGH-VOLTAGE
TEST PUSHBUTTON
for timed tests
VOLTAGE CONTROL
SAFETY INTERLOCK
requires voltage control
be reset to zero before
test leads can again
be energized.
AC High Pot Testers
AC/DC High Pot Testers
AC and AC/DC
High-pot Testers
Item Cat. No.
AC High-Pot Testers
0 to 3 kV 230315
0 to 4 kV 230415
AC/DC High-Pot Tester, 0 to 4 kV ac/5 kV dc 230425
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 17032
Instruction manual for 230315 & 230415 AVTM23-1J
Instruction manual for 230425 AVTM23-4J
Optional Accessories
Test probes with retractable tips, 4 ft [1.2 m]
High-voltage probe for ac models only 230315-2
Return probe for ac models only 230315-3
High-voltage and return probe set for ac/dc model only 230425-2
Adapters, for conversion of output receptacles for use with twist-lock plugs
NEMA L5-15R twist lock 235300-1
NEMA L5-20R twist lock 235300-2
NEMA L5-30R twist lock 235300-4
ORDERING INFORMATION
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
