Vanguard TRM-20_40 User Manual
Page 8
TRM-20 AND TRM-40 USER’S MANUAL
REV 1
4
1.2 Technical
Specifications
Table 1. TRM-20/40 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: 33 lbs (15.4Kg)
OPERATING VOLTAGE
100-240 Vac, 50/60 Hz
RESISTANCE READING
RANGE
1 micro-ohm – 2000 Ohms (TRM-20);
1 micro-ohm to 500 Ohms (TRM-40)
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-20); 1-40A in 1A increments (TRM40)
TEST VOLTAGE
60Vdc charging, 18V DC max during measurement
RESISTANCE CHANNELS
Two static resistance reading channels
DISPLAY
Back-lit LCD (64 x 128 dot graphic), viewable in direct sunlight and low
light levels
PRINTER
Built-in 2.5” wide thermal printer
INTERNAL TEST RECORD
STORAGE
100 test records. Each record can contain up to 99 readings.
EXTERNAL TEST RECORD
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 One 50-foot current cable set, two 50-foot resistance sense cable set, one
LTC control cable, one ground cable, one power cord, One RS-232C
cable, 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.