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DIELECTRIC
STRENGTH TESTERS / HIPOTS

HIGH- VOLTAGE TESTERS

POWER SUPPLIES

CABLE TESTERS

INSULATION RESISTANCE TESTERS

OIL TESTERS

HOT STICKS / PHASING STICKS

BRIDGES

OHMMETERS

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NEW Items

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Magnet Wire Testers
Model MWT-1 Magnet Wire Tester is a specialized high-voltage power supply
designed especially for performing the standard dielectric strength test on twisted
enamelled wires. The unit includes a test cage and all necessary equipment to
run the test, except a small quantity of mercury, fine steel balls or saline solution.

The test cage is equipped with a plastic door so that the operation of the test may
be observed. This door is fitted with a safety interlock switch so that the operator
cannot receive an electrical shock. Mercury* cups are machined in a nylon bar,
which plugs into sockets within the cage. This permits easy removal of the cups for
filling, emptying and cleaning.

The maximum output voltage is 20kv, and there is an adjustable (automatic) rate-
of-rise of voltage to the specimen. Testing always begins at zero volts. When
breakdown occurs, the reading of the voltage at breakdown remains on the
voltmeter, although the high tension is automatically disconnected immediately.
THIS METER MEETS THE FOLLOWING STANDARDS:

ASTM-D149, D1676, D3353
ANSI-C68.1
IEEE-Publication No, 4

MODEL
MWT-1

SPECIFICATIONS

INPUT

120V, 60 Hz, single phase, 10 A

HV OUTPUT

0-20 kV ac
adjustable rate of rise 100-1000 V/s

TRIP CURRENT

adjustable by a front panel control from about
2.5 to 60mA

METERS

memory digital voltmeter reads to 19.99kV

SPECIAL FEATURES

provision for external safety interlock switches
provision for external high-voltage-on lamp
provision for external fault lamp

SIZE

50W x 60H X45D cm (approx.)
(20W x 24H x 18 in)

WEIGHT

40  kg (85 lb) (approx.)

For production use we suggest our AC Sparker, Model AVS-300

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Automatic Heater Test Set
MODEL HTS-5

TEST 1



Dielectric Breakdown

Applied voltage - 0 - 3000 V ac (metered. 2%)
Duration of Test - 1 seconds
Sensitivity for current trip - 3 to 95 mA

TEST 2




Insulation Resistance

Applied voltage - 500 V dc
Range of resistance measurement - 0 to 100M
W
                (direct reading on meter)
Resistance limit - (set by Thumbwheel Switch) 99M
W

TEST 3







Element Resistance

Maximum nominal resistance setting
               (set by Thumbwheel Switch) - 999.9
W

Accuracy of resistance measurement 1%
Percent deviation meter - 20%
Plus and minus tolerances may be set independently
                over range 15% (approx.)
Separate Fault lamps for Low, High and Open elements.

Total Time of a Test Sequence is approx. 3.5 seconds.

Special Features

  • Solid State Sequencing Control
  • Ready Lamp shows when Test Sequence may be started
  • Push button to start test
  • Lamps indicate which Test is being done
  • Fault lamps on each Test
  • Accept and reject lamps for complete Test
  • Lamp test push button
  • If a failure, succeeding tests are note done, and Tester must be ''reset'' before another test can be performed
  • Accidental pressing of start button when test is in progress will not cause errors
  • Provision for remote start and optional remote reset
  • Provision for testing two elements alternately if desired
  • Counter, counts total number of tests
  • Tests may be done individually by key switches

MODEL HTS-5B HAS A DIGITAL METER FOR THE ELEMENT RESISTANCE TEST

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Safety Tester (FOR ELECTRIC TOOLS)

MODEL
ST-04

SPECIFICATIONS

INPUT

120V, 60 Hz, 15 A maximum continuous load
current for item under test

LEAKAGE CURRENT

 

Measured according to ANSI C101.1 and CSA C22.2 (various)

Meter reads to 0.75 mA, with more than 0.5 mA marked in red as ''BAD''.

GROUND RESISTANCE

Good (green) 0 to 0.5 W
        (yellow) 0.5 to 1
W
BAD (red)     > 1
W

LOAD CURRENT

Meter reads 0-5/25A

GROUND FAULT INTERRUPTER

Range of test current 5-12mA (in 1-mA steps)

SIZE

43W x 30.5 D x 18H cm approx.
(17W x 12D x 7H in)

WEIGHT

10kg (22lb) approx.

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ELECTROMETER

Model No. E-45244 is a portable, battery-operated HV voltmeter with a very high input impedance for measuring high-voltage with very low current (electrostatics).

MODEL
E-45244

SPECIFICATIONS

VOLTAGE RANGE

2 Ranges: Low Range 0-600 Vdc
                High Range 0-3000 Vdc

INPUT IMPEDANCE

>10 GW

OUTPUT DISPLAY

4-digital DPM (LCD)

ACCURACY

0.3% of full scale

BATTERY TEST

LEADS

push button
a lamp lights is batteries are OK

Two 6FT long test leads without probes

BATTERY LIFE

about 300 hours
Carrying Case

The handle can be rotated 360 by pulling outwards from the case. Thus the handle can be used to tilt the front of the instrument upwards for better viewing.

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Transformer Ratiometer
  • High Accuracy and
          Resolution
  • Measures Single and Three Phase Transformers

MODEL
TR-1A

SPECIFICATIONS

INPUT

240V, 60 Hz, single phase, approx. 0.5 A
removable line cord

TURNS RATIO FORMULA

% ratio = low voltage/high voltage x 100

RATIO MEASURING RANGE

0.001% to 100.000%

ACCURACY OF RATIO MEASUREMENT

0.005% (of full scale)

RESOLUTION

0.001%

REPRODUCIBILITY

0.002%

TRANSFORMER POLARITY INDICATION

forward or reversed direct reading

PHASE-ANGLE REFERENCE NUMBER (PARN) RANGE

2.5 lead to 2.5 lag

RESOLUTION OF PARN

0.05

NULL DETECTOR

solid-state, with ruggedized galvanometer readout

FUSING

input and output fused for maximum protection

SIZE

44W x 31D x 18H cm (23cm high with lid closed) approx.
(17W x 12D x 7H in) 9 in height with lid closed) approx.

WEIGHT

10kg (22lb) approx.

Line cord and test cables in separate carrying bag, complete with shoulder strap.

INSULATION SHEET TESTER

The Criterion Instruments Limited Model AV-200VA-40-03 High-Voltage Test Set is a
specialized high-voltage power supply designed especially for measuring dielectric
strength on insulating sheets. The unit includes a test cage and all necessary equipment 
to run the test.

The test cage is equipped with a Plexiglas door so that the operation of the test may be
observed. This door is fitted with a safety interlock switch so that the operator cannot
receive an electrical shock. Inside the cage is a flat plate on which is placed the sheet and
is connected to the clip inside the cage.

The maximum output voltage is 20kV, and there is an adjustable (automatic) rate-of-rise
voltage to specimen. Testing always begins at close to zero volts (less than 400 V). When
breakdown occurs, the reading of the voltage at breakdown remains on the voltmeter,
although the high voltage is automatically turned off immediately.

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MODEL
AV-200VA-40-03

SPECIFICATIONS

INPUT

120V, 60 Hz, single phase, approx. 10 A

HV OUTPUT

0-20 kV ac, 40 mA max output

RATE OF RISE

adjustable by a front-panel control
   100, 200, 500 and 1000 V/s

TRIP CURRENT

2 values, selectable by a toggle switch:
  LOW- 3.3 mA for output 0-2 kV
  HIGH-10 mA for output 2-20 kV

METERS

digital voltmeter reads to 19.9 kV
accuracy 2%, 2 digits

SPECIAL FEATURES

provision for external safety interlock switches

COUNTER

6 digit, electromechanical

SIZE

53W x 76H x 44D cm (approx.)
(21W x 30H x 17.5 D in)

WEIGHT

50 kg (110 lb) (approx.)