Products Description

Our automatic transformer cooling controller handles dual-power transfer, automatic cooler rotation, load-start input, manual override, and fault outputs. Working and auxiliary coolers rotate at the stated interval to share operating time.

Technical Principle

Temperature, load, oil-flow, fan, and pump feedback are collected by the controller. Programmed logic starts, stops, rotates, and transfers cooling groups according to configured thresholds while issuing fault alarms and recording operating status.

Product Features

The automatic transformer cooling controller applies a defined temperature sequence without continuous operator action. Thirty-day rotation shares operating hours between main and auxiliary cooler groups. Dual-power transfer preserves control when the selected source fails. Dedicated fault outputs give the station clear indications for protection and alarm handling.

Operating Conditions

Install the product in a clean, ventilated location without corrosive gas, conductive dust, water ingress, severe vibration, or strong impact. Provide reliable protective grounding, maintain the required electrical clearances, and use the rated auxiliary power supply. Confirm ambient temperature, humidity, altitude, enclosure protection, cable routing, and communication conditions before production and installation.

Product Parameters

Parameter	Details
Control modes	Manual, automatic, and remote
Auxiliary-cooler start	55°C
Auxiliary-cooler stop	Below 45°C
Cooler rotation interval	30 days
Load-start contact	Normally open; closed starts all coolers, open stops them
Dual-power function	Automatic transfer to the alternate source and return after recovery
Full-stop trip with 75°C signal	20-minute delay
Full-stop trip without 75°C signal	1-hour delay
Fault outputs	Cooler fault, all-coolers stopped, PLC fault, supply fault, and DC control-supply fault
Cabinet environment	-25°C to +70°C; ≤95% RH at 25°C; IP55

Product Advantages

The automatic transformer cooling controller applies a defined temperature sequence without continuous operator action.
Thirty-day rotation shares operating hours between main and auxiliary cooler groups.
Dual-power transfer preserves control when the selected source fails.
Dedicated fault outputs give the station clear indications for protection and alarm handling.

Main Applications

The automatic transformer cooling controller is used for transformer fan and oil-pump groups that need automatic start, rotation, and standby transfer.

It supports new cooling cabinets and project-specific control upgrades based on approved logic.

The controller serves utility substations, generation plants, and industrial transformer systems.

Components

Part	Function
Programmable controller	Executes temperature, load, rotation, and fault logic.
Dual-power switching circuit	Transfers control power between two sources.
Motor-control outputs	Start or stop working, auxiliary, and standby coolers.
Alarm and trip outputs	Report cooler, PLC, power, and all-stop conditions.