1、Function Introduction
As an intelligent instrument designed for modern new energy technology field, LD-B32 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
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Working voltage |
AC220V (-15%~+15%) |
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Contact output capacity |
Other contacts 2A/250VAC Fan contact 5A/250VAC |
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Storage environment |
-50℃~80℃，<95%RH |
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Measurement scope of environmental temperature: |
-40℃~160℃ |
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Measurement scope of oil temperature |
-50.0℃~160.0℃ |
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Measurement scope of humidity: |
1.0%~99.9% |
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Applicable environment |
-45℃~85℃, <95%RH (no condensation) |
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Operating altitude |
﹤4km |
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Resolution/precision |
Ambient humidity |
0.1%/±5.0% |
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Oil surface temperature |
0.1℃/±1.0℃ |
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Ambient humidity |
1℃/±1℃ |
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Communication |
Port form |
RS485 |
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Communication protocol |
Modbus RTU |
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Communication rate |
1200bps~19200bps |
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Appearance and weight |
Opening size |
76+1mm× 152+1mm |
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Overall dimension |
80mm (height)× 160mm (width)× 100mm (depth) |
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Weight |
Approximately 450g |
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4、Order and model selection
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LD-B32 - □ □ □ - □□□□ |
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0: no PT100 output 1: With PT100 output |
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0: no humidity measurement function 1: 1 channel humidity measurement function 2: 2-way humidity measurement function |
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D: None (basic) E: 1 Channel 4 ~ 20mA current output F: 1 channel 485 communication |
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Number of dehumidifier output channels (0 ~ 2) Number of tripping control output channels (0 ~ 2) Number of over temperature alarm output channels (0 ~ 2) Number of fan control output channels (0 ~ 1) |
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