Winding Temperature Indicator for Transformer (WTI) with Micro Switches

Winding Temperature Indicator for Transformer (WTI) with Micro Switches Model No - HT 105 - W
Model No - HT 105 - W
  • Thermal imaging for transformer 'Hot Spot' temperature indication
  • No external power supply required for indication or operation
  • Self contained system
  • Fully compensated for ambient temperature
  • High current switching
  • Maximum number of control switches '4'
  • Maximum capillary length '35 metres'
  • Weatherproof case to IP54
  • Maximum Reading Pointer
  • Switch Test Knob

Indicating Scale:


Thermal Imaging

Diameter:- 5.5" Angular Sweep -270°
Range:- 0-100°C, 0-120°C, 0-150°C,
Accuracy of indication:- ±1 % of Full Scale Deflection.


Information required for transformer full load conditions: Temperature rise above top oil.

Transformer (CT) output (Maximum 5 Amps as standard)

Electrical Connections:



Full circuit diagram supplied with each instrument
All circuits insulation tested with 2000 Vac.
Terminal block conductor size: 0.5 - 4.0mm2.


Grey powder coated paint.
Electrical entry points: rear & bottom.
Surface or Panel mounting options.

Switch Configurations:


Capillary System:

Maximum number '4' Factory assembled - Normally/Open or


Material: Capillary protected by flexible stainless
steel sheathing.
Length: 1.5-35 metres.
Case entry points: top, rear, or bottom.
Connector: straight, or angled elbow.
Bulb and Pocket to suit customer requirements.



Product Range

Winding Temperature Indicator for Transformer with Mercury Switches (WTI)

Winding Temperature Indicator for Transformer with Micro Switches (WTI)

Oil Temperature Indicator for Transformer With Mercury or Micro Switches (OTI)

Dial Type Thermometer with Mercury Switch (DTT/TSD)

Resistance Temperature Detector (Pt-100/CR-53 Ohms)

Differential Pressure Guage

Temperature Switch

Limit Switch

Magnetic Oil Gauge (MOG)

Buchholz Relay (GOR)

Pressure Relief Valve (PRV)

Joint Free Silica Gel Breather

Silica Gel

Heat Shrink Tape & Tube

Teflon Cable

Flow Indicator

Pressure Switch

Flow Relay

Temperature Controller

Metal Case Industrial Glass Thermometers

Digital Temperature Indicator 24 Channels

Heat Detector

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