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LD-B10-C220YA series optical fiber temperature controller (hereinafter referred to as controller) is a combination of customer needs, structural design, performance reliability and other factors based on the new design, is a fully reflects the "customer-centric" innovative products. Functional characteristics The controller is based on the high-performance enhanced single-chip microcomputer system. It adopts the fluorescent optical fiber temperature sensor and other interface circuits to realize the temperature measurement, display and real-time monitoring of the transformer/reactor winding and iron core. The optical sensor and signal transmission channel of the fluorescent fiber optic sensor have the characteristics of natural resistance to strong electromagnetic interference, with high reliability, good insulation performance, small size, long life and other characteristics, which fundamentally solve the defects of electrical.
Type selection (arbitrary combination of E, F, G/I and C)
Ambient temperature: -25℃～+55℃; Relative humidity: < 95％(25℃);
Power frequency: 50Hz or 60Hz(±2Hz);
Power voltage: AC220V(+10%, -15%);
AC380V(+10%, -15%);
(If there is no special indication when ordering, AC220V shall prevail)
-30.0℃～240.0℃
Grade of accuracy: Grade 1(Grade 0.5 for temperature controller, Grade B for sensor);
Resolution: 0.1℃
≤8W
Capacity of contact of fan: 6A/250VAC (cosΦ=0.4);
Capacity of control output: 5A/250VAC (Resistance); 5A/30VDC
JB/T7631-2016 Electronic Thermo-controllers for Transformers ISO9001:2015 Quality Management Systems-requirements
LD-B10-C | ||
Serial number of controller |
220：Power supply AC220V 380： Power supply AC380V |
D ：Conventional type E ：D+4~20mA current output F ：D+RS485 communication G：D+1 channel ambient temperature measurement and control I ：D+1 channel iron core temperature measurement and control L：Fan fault C：D+PTC over-temp alarm(optional) PTC over-temp trip(optional) |
(1)D25 sensing cable (3-wire system), Cable length tolerances: ±2.5%
(2)Sensor
A.Pt100 platinum resistor is a thermo-resistor with better linearity in the range of -30.0℃~240.0℃ and meets the requirements for Grade B set forth in GB/T8622-97-- Technical Specification and Reference Table for Industrial Platinum Resistance.
B.Overall dimension: Ф4mm×40mm
(3)Interlock control of Pt100 and PTC on over-temp alarm and over-temp trip signal (optional function)
A.Explanation of PTC
PTC is an abbreviation for positive temperature coefficient thermistor, which is a semiconductor resistor having a typical temperature sensitivity. When the temperature exceeds a certain value (Fixed temperature point not be adjust- able), its resistance value will increase impulsively with increasing temperature, i.e., resistance mutation.
B.Logical relation of interlock control of Pt100 and PTC
a.Interlock control of Pt100 and PTC on over-temp alarm
When the temperature measured by Pt100 exceeds over-temp alarm value, in addition, PTC reaches the point of over-temp alarm and the resis- tance has mutated. Over-temp alarm signal will output.
b.Interlock control of Pt100 and PTC on over-temp trip
When the temperature measured by Pt100 exceeds over-temp trip value, in addition, PTC reaches the point of over-temp trip and the resistance has mutated. Over-temp trip signal will output.
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