LD-B10-T220 Temperature Controller of Dry LD-B10-A220

Type selection (arbitrary combination of E, F, G/I and C)

1. The Temperature controller
2. The sensor assembly
3. The instruction

2 The technical specification

1. Operating conditions

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)

2. Range of measurement

-30.0℃～240.0℃

3. Measurement accuracy

Grade of accuracy: Grade 1(Grade 0.5 for temperature controller, Grade B for sensor);

Resolution: 0.1℃

4. Power consumption of temperature controller

≤8W

5. Contact capacity

Capacity of contact of fan: 6A/250VAC (cosΦ=0.4);

Capacity of control output: 5A/250VAC (Resistance); 5A/30VDC

6. Standards of design and production

JB/T7631-2016 Electronic Thermo-controllers for Transformers ISO9001:2015 Quality Management Systems-requirements

3 Model function

Type selection (any combination between E, F, G/I, L and C)

3. Sensing Cable Assembly

• • 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.