Dry-Type Transformer Temperature Controller - Metal Enclosure 02

Dry-Type Transformer Temperature Controller - Metal Enclosure 01

Dry-Type Transformer Temperature Controller – Metal Enclosure

The Dry-Type Transformer Temperature Display Controller is a new generation of multifunctional, microprocessor-based temperature controllers designed to ensure the reliable operation of air-cooled dry-type power transformers. It utilizes three PT100 platinum thermal resistors—embedded within the three-phase windings of the transformer—to detect temperature rises in the winding coils. Based on these temperature readings, the controller automatically manages the startup and shutdown of cooling fans, triggers over-temperature alarms, and initiates an ultra-high temperature trip to safeguard the transformer’s operation. Designed in accordance with the JB/T7631 standard and incorporating advanced single-chip microcomputer technology combined with I²C storage and adjustment techniques, the controller features a simple structure, reliable performance, and exceptional anti-interference capabilities. Furthermore, the controller includes a “Black Box” function capable of recording the temperatures of the three winding coils, as well as the operational status of the unit itself, immediately prior to a power outage.

1. Temperature Measurement Range: -40°C to 200°C
2. Temperature Measurement Accuracy: ±1°C
3. Resolution: 0.1°C
4. Operating Voltage: AC 170V – 250V (48–60 Hz)
5. Power Consumption: <8 VA
6. Sensor Type: PT100
7. Contact Capacity: Fan: AC 125V/10A or AC 220V/7A (2 sets)
Over-temperature Alarm: AC 125V/10A or AC 220V/7A (1 set)
Over-temperature Trip: AC 125V/10A or AC 220V/7A (1 set)
Door Open Alarm: AC 125V/10A or AC 220V/7A (1 set)
8. Instrument Dimensions: 260 x 200 x 80 mm; Panel Cutout Dimensions: 232 x 180 mm
9. Anti-interference Performance: Compliant with JB/T7631-94 Standard
10. Instrument Weight: <3 kg

Dry-Type Transformer Temperature Controller – Metal Enclosure

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