Vanguard TRM-203_403 User Manual
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TRM-203 AND TRM-403 USER’S MANUAL
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Technical Specifications
Table 1. TRM-203/403 Technical Specifications
TYPE
Portable transformer winding resistance meter
PHYSICAL SPECIFICATIONS
21” W x 17” H x 9” D (53 cm x 43 cm x 24 cm); Weight: 35 lbs (15.8Kg)
OPERATING VOLTAGE
100-240 Vac, 50/60 Hz
RESISTANCE READING
RANGE
1 micro-ohm – 2000 Ohms (TRM-203);
1 micro-ohm – 500 Ohms (TRM-403)
ACCURACY
1 – 19,999 micro-ohms: ±0.5% reading, ±1 count;
20 – 999 milliohms: ±1% reading, ±1 count;
1 -2000 Ohms: ±1.5% reading, ±1 count
TEST CURRENT
1-20A in 1A increments (TRM-203); 1-40A in 1A increments (TRM403)
TEST VOLTAGE
60Vdc charging, 18V DC max during measurement
INPUT CHANNELS
4 input channels for measuring resistance
DISPLAY
Back-lit LCD Screen (128 x 64 pixels), viewable in direct sunlight and low
light levels
PRINTER
Built-in 2.5” wide thermal printer
INTERNAL DATA STORAGE
256 static test records (each can contain up to 111 readings) and 120
dynamic test records
EXTERNAL DATA STORAGE
Up to 999 test records on external USB Flash drive
COMPUTER INTERFACES
RS-232C, USB, and Bluetooth
SAFETY
Designed to meet UL 61010A-1 and Can/CSA C22.2 No 1010.1092
standards
ENVIRONMENT
Operating: -10˚C to 50˚ C (15˚F to +122˚ F); Storage: -30˚ C to 70˚ C (-
22˚F to +158˚ F)
HUMIDITY (MAX)
90% RH @ 40° C (104° F) non-condensing
ALTITUDE (MAX)
2000m (6562 ft) to full safety specifications
CABLES
Four 50-foot test cables, one LTC control cable, one ground cable, one
power cord, one USB cable
OPTIONS
Transportation Case
WARRANTY
One year on parts and labor
NOTE
The above specifications are valid at nominal operating voltage and at a
temperature of 25
°C (77°F). Specifications may change without prior notice.