1, the main features
▲ with large digital numbers display, so that the working status of thermostats and display of measured values more intuitive.
▲ adjusted using the I2C and storage technology, data protection save power.
▲ external single-phase fan with fan motivation (regular start and stop) function.
▲ with over temperature alarm, over temperature trip, fan start and stop functions.
▲ with 4-20mA analog current output and RS-485 communication.
2. Technical Indicators
2.1 Range of measurement: -30.0℃～240.0℃
2.2 Accuracy of measurement: Grade of accuracy: Grade 1(Grade 0.5 for temperature controller, Grade B for sensor)
Resolution 0.1℃
2.3 Operating conditions: Room temperature: -20℃～55℃
Relative humidity: < 95% (25℃)
Power frequency: 50Hz or 60Hz (±2Hz)
Power voltage: AC220V (+10%, -15%)
Or AC380V (3-phase 3-wire system) (+10%, -15%)
(Power voltage should be indicated before placing order, otherwise AC220V shall govern)
2.4 Power consumption of temperature controller: ≤8W
2.5 Execution standard: Production standard: JB/T7631-2016 Electronic Thermo-controllers for Transformers
Certification passed: ISO9001:2015 Quality Management Systems-requirements
Test passed: IEC61000-4:2002 International Standard and GB/T17626-2008 Standard for Electromagnetic Compatibility Test and Measuring Technology
2.6 Relay contact output:
Capacity of contact of fan: 6A/250VAC (Cosφ=0.4) (Single-phase fan)
9A/380VAC (Cosφ=0.4) (Three-phase fan)
Control of output capacity: 5A/250VAC; 5A/30VDC (Resistance)
2.7 Protection class: IP40
Protection class of panel: IP54
3. Type and Classification of Function
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Type
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Function
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Type D
(Ordinary type)
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Three-phase circular measurement; Three-phase circular display/maximum value display and mutual switching between two functions; Input disconnection and trouble self-check display and output; Auto start and stop of cooling fan and output; Over-temperature alarm display and output; Over-temperature tripping display and output; Display of manual/auto modes of fan, output and mutual switching; Digital compensation for value displayed in each channel; Function of "black box"; Timed start, stop and control function of fan; Detection of output status.
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Type E
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The same as Type D, with addition of 4~20mA analogue current output.
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Type F
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The same as Type D, with addition of RS485 serial communications function.
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Type G
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The same as Type D, with addition of one-way transformer room temperature measurement and control.
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Type I
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The same as Type D, with addition of one-way transformer core temperature measurement and alarm.
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Type L
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The same as Type D, with addition of protection and alarm function for lack of phase and failure of fan.
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Type C
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The same as Type D, with addition of interlock control of Pt100
and PTC on over-temp alarm and over-temp trip signal.
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Note: O requirements for the temperature controller should be indicated when placing orders.
