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Transformer temperature monitor

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Key Features

Cost-effective Fibre Optic temperature Monitoring System for Transformers

The Nortech TT has been thoroughly thought and designed to meet the temperature monitoring requirements of small and medium size transformers. The Nortech TT offers power utilities a simplified, dependable but most importantly a cost-effective solution for direct, accurate and real time hot spot temperature measurement of transformer windings.

FISOs on-line temperature monitoring enhances safety and reliability issues while increasing economic benefits on capital investment and ongoing operating expenses of high voltage equipment. The use of the Nortech TT multi-channel fibre optic monitoring solution provides engineers and operators, an increased knowledge of operational condition assessment; load planning, asset management and end of life determination



Number of channels 1, 2, 4 or 6
Reading temperature range −40ºC to 225ºC
Resolution 0.1ºC Analog, 1ºC Digital output
Conditionner accuracy ±1ºC
Sampling rate 1 Hz
Display (optional) Large 1.56 cm (0.614 in) LED display
Serial ports 1 × RS-232, 2 × RS-485
Communication protocols MODBUS (ASCII, RTU), Proprietary protocol, Modem capabilities
Analog outputs 1, 2, 4 and 6 factory confi gurable 4–20 mA, Optional 0–1 mA and 0–10 V
Power supply 24 V DC, 85–264 V AC, frequency 45–65 Hz
Power requirement 12–30 VDC, 2A
Light source Life expectancy >25 years
Installation Standard Wall-mount, Optional-DIN rail or NEMA-4 enclosure
Weight 1.8 Kg
Dimensions (H × W × D) 210 × 217 × 78 mm
Operating temperature −20ºC to 60ºC
Storage temperature −30ºC to 85ºC
Relative Humidity 95% RH at 25°C and 55°C
Standards met IEC 60068-1 Environmental testing: general IEC 60068-2-1 Tests A :Cold
IEC 60068-2-2 Tests B: Dry heat IEC 60068-2-14 Test N: change of temperature
IEC 60068-2-30 Test Db and guidance: Damp IEC 60068-2-78 Test Cab: damp heat, steady
MIL-STD-810F Vibration and shock
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