1.Function Introduction
As an intelligent instrument designed for modern new energy technology field, new energy temperature and humidity controller can be used to measure oil temperature of the transformer and the temperature and humidity inside the box transformer, indicating visualized and clear temperature and humidity values with Nixie tube. Excessive high ambient temperature will cause the automatic start of the drought fan; Overdue oil temperature calls for the functions of warning output and tripping output; Overdue ambient humidity inside the box transformer will cause automatic start of ambient fan or start of heaters for dehumidification to keep favorable operating environment.
Oil surface temperature sensor adopts armor PT100 oil temperature liquid sensor with three-wire system mode of a connection whose lead wire amounts to 20 meters and temperature shows no distortion. The imported, highly reliable and integrate ambient temperature and humidity sensor enjoys the features of high accuracy, excellent stability and remarkable anti-interference. This controller supports the inquiry of temperature tripping records and RS485 communication or analog quantity output can be selected (4 to 20mA current output or 1 to 5V voltage output).
2.Application area
● Photovoltaic power system ● High-tension switch board
● Wind power electrical system ● Box-type substation
3.Technical parameters
Measurement scope of oil temperature(℃): -50℃~160℃.
Resolution: 0.1℃
precision: grade 0.5
Winding temperature (℃)：-50℃~160℃.
Resolution: 0.1℃
precision: grade 0.5
Measurement scope of environmental temperature(℃): -40℃~160℃.
Resolution: 0.1℃
precision: ±1.0℃
Measurement scope of humidity(％RH): 1.0%~99.9%
Resolution: 0.1%.
precision: ±5.0%
Contact capacity：Fan: 6A 250VAC (cosφ=0.4)
Other: 5A 250VAC/5A 30VDC (resistive)
Power consumption of controller (W)：≤8
Working voltage: AC220V(-15%，+15％) ; 50/60(±2)Hz
Applicable environment -45℃~85℃, <95%RH (no condensation)
Operating altitude：﹤4km
Appearance and weight: Opening size 76+1mm× 152+1mm
Overall dimension 80mm (height)× 160mm (width)× 100mm (depth)
Conforming to the relevant standards：JB/T7631-2016，ISO9001：2008，IEC61000-4:2002，GB/T17626-2008
4.Model selection description
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LD-THCB13-2 3 P DEFL 3 / T
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3
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Air: 1-way winding temperature measurement
2: 2-way winding temperature measurement
3: 3-way winding temperature measurement
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P
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Air: the standard type has one channel of ambient temperature and humidity measurement
P: Enhanced 2-way ambient temperature and humidity measurement
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D
E
F
L
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Empty: no additional functions
D: Additional 1-way oil temperature PT100 signal output
E: Additional 1-way oil temperature 4 ~ 20mA output
F: Additional 1-way RS485 communication function
L: Additional ambient temperature low temperature heating function
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3
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2: 1 alarm output + 1 trip output
3: 1-way alarm output + 2-way trip output
4: 2-way alarm output + 2-way trip output
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T
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Empty: no special function
T: Contains special functions
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remarks:
1. Special functions: including special working voltage, special 4 ~ 20mA output, special control logic output, etc.
Such as: working voltage ac230v2, 4 ~ 20mA current output, no fan contact output, etc. 2 additional functions defl can be combined arbitrarily.
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