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

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 100MW                 (direct reading on meter) Resistance limit - (set by Thumbwheel Switch) 99MW
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

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.

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.

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.

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.)