Temperature controller is designed for the safe operation of dry-type transformers, a high-performance auxiliary equipment, which through high-precision sensors and intelligent algorithms, real-time monitoring of single-phase winding temperature of dry-type transformers, in the case of failure of the main temperature control system can still be independently triggered by the tripping for the transformer.
It provides double safety protection, effectively avoids transformer overheating damage, and significantly extends the service life of the transformer.
The equipment has a self-test function and fault alarm output contacts, which can detect abnormal conditions such as open sensors and temperature measurement circuit failures in a timely manner, start the fault alarm function and output contact closure; at the same time, it provides two pairs of over-temperature tripping output contacts, when the temperature exceeds the preset safety threshold.
Start the over-temperature trip function, the output contact closure; and the product is convenient to install, easy to understand the operation, is to protect the safe and stable operation of the dry-type transformer's right-hand man.
Technical Parameter
| Working conditions: | Ambient temperature: -20℃～55℃; relative humidity≤95% |
| Working power supply: | AC220V (±20%), 50Hz/60Hz (±2Hz) |
| Measurement range: | -30～240℃ |
| Accuracy: | 1.0 level |
| Discernment: | 0.1°C |
| Contact capacity: | AC250V/5A (resistive) |
| Whole machine power consumption: | ≤ 3W |
(an official) standard
Production standard: JB/T7631-2016 "electronic temperature controller for transformer" industry standard
Passed the certification standard: ISO9001:2015 international quality management system certification
ISO14001:2015 Environmental Management System Certification
ISO45001:2018 Occupational Health and Safety Management System Certification
Operating Instructions
indicator light
Status Description: When the device is running, the power lamp is always on; when the fault and trip function is activated, the fault trip lamp is always on.
| Status\Indicator | power lamp (of an appliance etc) | trouble light | trip light |
| Run/Start | Ever Bright | Ever Bright | Ever Bright |
wiring terminal
| terminal symbol | functional definition | instructions |
| L/N | Operating power input | AC220V |
| RA+/RA-, RA- | Sensor Input: Positive/Negative, Negative | Three-wire PT100 signal input |
| AH1_1/AH1_2 | Over-temperature trip 1 output contact | Passive normally open contact: simultaneous output with AH2 |
| AH2_1/AH2_2 | Over-temperature trip 2 output contacts | Passive normally open contact: Simultaneous output with AH1 |
| D1/D2 | Trip parameter setting | D1, D2 shorted: over-temperature trip start-up temperature is 155℃.
D1, D2 disconnected: over-temperature trip start temperature of 175 ℃ |
| ER_1/ER_2 | Fault Alarm Output Contacts | Passive normally open contact: contact output for temperature measurement circuit failure |
| NC | standby | No wiring |
Note: D1/D2 contacts are internally powered, do not connect external power; the physical wiring diagram of the product shall prevail.
3 Product installation instructions
Mounting: rail mounted (standard 35mm rail)
Dimensions: 100.6x22.5x117.0mm (L x W x H)
