Fujian LEAD LD-B10-10 Series Temperature Controller of Dry Transformer

分类 Fan/Ventilation Blower

LD-B10-10 series intelligent temperature controller is designed for dry-type transformers. Featuring high precision measurement, dual LED display, automatic cooling fan control, over-temperature alarm and trip protection, with RS485 communication and 4-20mA analog output.

其他信息

Product Details:

1. Introduction

Safe operation and working life of power transformers depends largely on the
safety and reliability of transformer winding. If the temperature of transformer
winding exceed the temperature which insulation withstand, it will damage the
insulation. This is one of the most important reasons that transformers cannot
operate normally.
LD-B10 series temperature controller of dry transformer (Referred to as
temperature controller) is an intelligent controller designed especially for safe
operation of dry transformer. The temperature controller features adoption of single
chip computer technology and utilization of the platinum thermo-resistors embedded
in the winding of the dry transformer for detection and display of temperature rise of
the transformer windings. It can start or stop the cooling fan automatically for forced
air cooling of windings and control over-temperature alarm and over-temperature
tripping output so that the transformer will be operated safely.

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/T7631-2005 Electronic
Thermo-controllersforTransformers
Certification passed:ISO9001:2008Quality 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 offan:6A/250VAC(Cosφ=0.4)(Single-phase fan)
9A/380VAC(Cosφ=0.4)(Three-phasefan)
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

Type	Function
LD-B10-10D	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/automodes of fan, output and mutual switching; Digital compensation for value displayed in each channel; Function of “blackbox”;Timed start, stop and control function of fan; Detection of output status
LD-B10-10E	The same as Type D,with addition of 4~20mA analogue current output.
LD-B10-10F	The same as Type D, with addition of RS485 serial communications function.
LD-B10-10G	The same as Type D,with addition of one-way transformer room temperature measurement and control.
LD-B10-10I	The same as Type D,with addition of one-way transformer core temperature measurement and alarm.
LD-B10-10L	The same as Type D,with addition o fprotection and alarm function for lack of phase and failure of fan.
LD-B10-10C	The same as Type D, with addition of interlock control of Pt100 and PTC on over-temp alarm and over-temp trip signal.