TR 7570 C Four channel temperature scanner with RS485 Remote output Transformer Protection Relay

Transformer protection relay for cast resin/dry type transformer


Type: Temperature Scanner

Sub Type:

Weight: 4.00 KG

Manufacturer: Power Electronics and control

Tax: 18.00 %

In Stock

Delivery in 2-4 days in major cities and 3-7 days in remote area.
Worldwide delivery available.

100% Secure Payments, 7 Days Easy Return Policy.

Item Specifications :

Condition : A brand new unused, undamaged item that is fully operational and functions as intended.

Warranty : 1 Year Manufacturer.

Warranty Service : Repair or Replacement.


Package Contain : 

1 Temperature Scanner 

1 Test Report

1 user manual with technical details.


Product Descriptions :

Four channel temperature scanner.
Temperature indication range : – 50 to 300 °C.
Four relay outputs for Fault, Fan, High (Alarm) & Very High (Trip). 4 C/O Relay
Independent set of setpoints for 4th Channel.
RS 485 output for remote temperature indication 
Aux. Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC).


Standard Features:

Single scanner unit for three windings and fan Control. Four output relays for Alarm (High), Trip (V.High), Fan on/off (Fan) & to warn against sensor open or wrong sensor connection (Fault). Memorizes max. temperature even after power fail conditions. TR-7570-C comes with RS-485 output for remote indication, 

The model TR-7570-C is designed for safe operation of medium voltage cast resin/dry type transformer.

It is suitable for control room as well as marshalling box  installation and is built for long and trouble-free operation under extreme conditions of services associated with transformer.

Three numbers of user settable set-points can be used to control the cooling fan, to warn the user of high winding temperature and to shut down the transformer in case of excessive heating.

Four numbers of Pt-100 RTD sensors allow the user to monitor the temperature of all the three phase windings plus one other critical point on the transformer like core.  Alternatively, it can be used to check the ambient temperature or can be left as spare

TR-7576-C provided with facility for computer communication using RS-485 with modbus RTU salve protocol


Technical Specifiction : 

Inputs : 4 numbers of RTD sensors (Pt-100, IEC-60751). Number of Set-points : Three (High, V.High & Cooling Fan On).

Temperature indication range : -50 to 300 °C.

Set point range : 1 to 300 °C. Accuracy : 1 °C.

Dead Band (relay differential) : User settable ( Range : 1 - 25 °C)

Display Speed : User settable ( Range : 1 - 60 secs). Display : 3 Seven Segment 1/2" displays for displaying Temperature. 1 Seven Segment 1/2" displays for displaying channel number.

Supply Voltage : 85 - 270 VAC/DC.

Outputs : Four relay contacts (one C/O contact for - Fault, Fan, High & V.High), One analog 4-20mA output in.

Contact Racting : 5A @ 230VAC & 0.3A @ 220VDC.

Relay operations : Fault : Will energize after few seconds of power-on and de-energinze on detecting fault condition. Fault relay will remain on in normal conditions. Fan : Will energize if any channel's temperature exceeds fan set point . High : Will energize if any channel's temperature exceeds High set point. V.High : Will energize if any channel's temperature exceeds V.High set point.

Terminals : Combicon screwed caged, suitable for 2.5 mm2 solid conductors.

Insulation : Insulation resistance shall be 100 Mohm or more when 500 VDC is applied between each terminal shorted together and earth. Controller will withstand 2 KV rms at 50/60 Hz. for 1 min. applied between all relays & supply terminals shorted together & earth. Power consumption : Max. 15VA

Environmental : Operating conditions : Amb. Temp. : -20 °C to 70 °C,

R.H. : 95% Max non-condensing.

Storage Temp. : -20 °C to 85 °C.

Test conditions : Amb. Temp. : 27 °C 5 °C, R.H. : 20 - 80% non-condensing. Vibration : 10-150 Hz, 0.004" displacement.


Our offered controller is manufactured by our adroit professionals using quality tested components and modern technology. we kindly request buyers to communicate with us if there are any issue. we will help to solve all of your issue. Every care is taken for packing so that the item reaches to the buyer safely and undamaged.