852-XXX WTI
Ashridge design and manufacture the complete range of National Grid Approved winding and oil temperature indicators which provide high integrity protection, control and monitoring for power transformers.
Applications:
Winding Temperature Indicators
Transformer Cooling Control
Temperature Measurement
The market leading Series 852 WTI’s continuously calculate the winding temperature (otherwise known as the hot spot) in the transformer and display the hottest winding. The 852-013 OTI calculates and displays the oil temperature.
The extensive range includes alarm relay output, data logging, expired life, wide range of CT inputs, 1, 2, or 3 winding versions, dual display and an intelligent cooling control system with ‘deviation from normal’ alarms to ensure optimal asset life and protection for the transformer. All models are easy to install or retrofit using either the integral keypad or by using Ashridge’s configuration and set up software.
Please refer to our 852 Selection Guide to select the appropriate model for your requirements or refer to the summary below:
Software – Ashridge now provide a configuration software utility which can be used to connect to any 852 Series WTI / OTI by using MODBUS to read and edit parameter settings. The software can also provide a download of the settings in TEXT format for incorporating in documentation. To use the software with a PC the Ashridge USB to RS485 configuration lead will need to be purchased. This is supplied as a set with the program and user manuals provided on a USB memory stick. The configuration software also contains a utility to enable download of the logs from the 852 memory.
DIN USB RS485 – Isolated USB interface to allow for quick and safe configuration of 852 series WTI.
852-013 – Ashridge’s Oil Temperature Indicator, featuring watchdog + 3 relays, 1 analogue output, Modbus and DNP3 communications and data logging, with single display.
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| 852-112
Entry level WTI, featuring watchdog + 2 relays, 2 analogue outputs, Modbus and DNP3 communications, expired life and data logging. The 852-112 is a single winding version with dual display. |
852-113 Featuring watchdog + 3 relays, 2 analogue outputs, Modbus and DNP3 communications, expired life and data logging. The 852-113 is a single winding version with dual display. |
852-116 This model features watchdog + 6 relays, 2 analogue outputs, Modbus and DNP3 communications, intelligent cooling system, expired life and data logging. The 852-116 is a single winding version with dual display. |
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852-112 Datasheet |
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| 852-118
Featuring watchdog + 8 relays, 4 analogue outputs, Modbus and DNP3 communications, intelligent cooling system, expired life and data logging. The 852-118 is a single winding version with dual display. |
852-216 This model features watchdog + 6 relays, 2 analogue outputs, Modbus and DNP3 communications, intelligent cooling system, expired life and data logging. The 852-216 is a 2 winding version with dual display. |
852-218 Featuring watchdog + 8 relays, 4 analogue outputs, Modbus and DNP3 communications, intelligent cooling system, expired life and data logging. The 852-218 is a 2 winding version with dual display. |
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852-118 Datasheet |
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| 852-318
This model features watchdog + 8 relays, 4 analogue outputs, Modbus and DNP3 communications, intelligent cooling system, expired life and data logging. The 852-318 is a 3 winding version with dual display. |
852-338 Top of the range, this model features watchdog + 8 relays, 4 analogue outputs, bottom oil and ambient (or tap changer) PT100 inputs, Modbus and DNP3 communications, intelligent cooling system, expired life and data logging. The 852-338 is a 3 winding version with dual display. |
Transformer Accessories We provide a number of accessories that support our products, from CTs, PT100 probes & pockets to communications leads. Custom accessories are also provided, please contact us to find out more. |
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852-318 Datasheet |
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