Vanguard LTCA-40 Load Tap Changer Analyzer Specifications

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Vanguard-ltca-40Triple resistance-reading channels allow the Vanguard LTCA-40 Load Tap Changer Analyzer to measure three winding resistances simultaneously.

Four-wire (Kelvin) connections provide high accuracy and require no lead compensation. A special feature of the Vanguard LTCA-40 is its ability to measure and graph the resistance trace of a transformer LTC during operation. Using a 60Vdc power supply, the Vanguard LTCA-40 is capable of outputting 40 amperes.

Vanguard LTCA-40 Load Tap Changer Analyzer specifications:

NOTE : the above specifications are valid at nominal voltage and ambient temperature of +25°C (+77°F).

Type load tap changer analyzer

Physical Specifications 25”W x 8K”H x 20” D (63.5 cm x 21.6 cm x 50 cm); Weight: 46 lbs (20 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;

20 ¬ 999 milli-ohms: ±1% reading, ±1 count;

1 ¬ 500 ohms: ±1.5% reading, ±1 count

Resistance Channels three static resistance reading channels, One dynamic resistance channel

Test Voltage 60 Vdc max

Test Currents 1 ampere, 5 amperes, 10 amperes, 40 amperes

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

External Data Storage one USB Flash drive interface port; stores up to 999 test records on a USB

Flash drive (not included)

Computer Interfaces one RS-232C port, one USB port

Internal Test Record Storage stores up to 128 static resistance test records (48 tests per record) and 11 dynamic resistance test records

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

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