info@amperis.com (+34) 982 20 99 20
The QLTCA-10 is Amperis’ transformer winding resistance meter and load tap changer contact analyzer. The QLTCA-10 is designed to accurately measure the winding resistance of highly inductive power transformers. The unit’s triple resistance-reading input channels can measure three winding resistances simultaneously. Two-wire (Kelvin) connections provide high accuracy and require no lead compensation. A special feature of this device is its ability to measure and graph the resistance trace of a transformer LTC or voltage regulator contact during operation.
One resistance input channel is dedicated to this feature. The QLTCA-10 provides stable resistance readings of very large transformers by utilizing a 60 Vdc power supply capable of outputting at test current up to 10 Amperes.
QLTCA-10 Specifications
Type |
Load tap changer analyzer |
Physical specifications |
21”W x 17”H x 9” D (53 cm x 43 cm x 24 cm); Weight: 33 lbs (15.4 kg) |
Operating voltage |
100 - 240 Vac, 50/60 Hz |
Resistance reading range |
1 micro-ohm - 500 ohms |
Accuracy |
1 - 19,999 micro-ohms: ±0.5% reading, ±1 count; |
Test current |
1 ampere, 5 amperes, 10 amperes |
Test voltage |
60 Vdc max |
Resistance channels |
Three static resistance reading channels, One dynamic resistance channel |
Ac current input |
Clamp-on current sensor, 1 – 20 Amperes |
Display |
Back-lit LCD Screen (128 x 64 pixels); viewable in bright sunlight and low-light levels |
Printer |
Built-in 4.5-inch wide thermal printer |
Internal data storage |
Stores up to 128 static resistance test records (48 tests per record) and 11 dynamic resistance test records |
External data storage |
One USB Flash drive interface port; stores up to 999 test records on a USB Flash drive (not included) |
Computer interface |
One RS-232C port, one USB port |
Load tap changer contact |
Designed to meet IEC 61010 (1995), UL 61010-a, and CAS-C22.2 standards |
Safety |
Designed to meet UL 61010A-1 and CAN/CSA C22.2 No. 1010.1-92 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 |
90% RH @ 40°C (104°F) non-condensing |
Altitude |
2,000 m (6,562 ft) to full safety specifications |
Cables |
One 50-foot current cable set, three 50-foot resistance cable sets, ground cable, USB cable, RS-232C cable, LTC cable, power cord, cable bag |
Optional accessories |
Transportation case |
Warranty |
1 year on parts and labor |
NOTE: the above specifications are valid at nominal voltage and ambient temperature of +25°C (+77°F). Specifications are subject to change without notice
Do you want to buy high quality Transformer winding resistance meters?
Inquire for our Transformer winding resistance meters prices.
Do not hesitate to contact us, call us today by phone (+34) 982 20 99 20. We are happy to help you.