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NORTECH SENTINEL

Fiber Optic Direct Winding Temperature Monitoring System with Datalogging and Relays

Key Features

1 to 6 channels Up to 225ºC Accuracy ±1°C User selectable analog outputs (0–10 V, 4–20 mA) Six form-C relays for one system fault relay RS-232 & RS-485 ports Built in non volatile memory

With more than 200 systems installed and used worldwide, FISO’s Nortech Sentinel optical signal conditioner is a fl exible, multi-channel fi ber optic signal conditioner designed specifi cally for direct, accurate and real-time tem perature monitoring of transformer windings.

Nortech Commander Software Modem capabilities Network capabilities PLC and SCADA compatible

FISO’s Nortech product line offers accurate and repeatable measurements, reli-ability and long term performance. The Nortech solution provides its worldwide users with tangible benefi ts and distinct features.

Large, easy to read LED display Internal real time clock Compact, robust signal conditioner with optional 19-inch rack mount or NEMA 4 enclosure

Benefi ts

Accurate, direct and real-time knowledge of hot spot temperature. Provides assistance in transformer design and rating verifi cation.

EMC compliant

Safely maximizes loading and overloading.

4 year warranty

Prevents premature failure. Avoids equipment outage and undesirable failures.With up to six channels per unit, an analog output for each channel, and user programmable event relays, the Nortech Sentinel provides the transformer in- dustry with a powerful diagnostic tool. The Nortech Sentinel and its accompa- nying software, Nortech Commander, perform automated data collection and seamless data exchange with standard spreadsheet programs such as Microsoft Excel™. Through data analysis and graphing, users can maximize loading and transformer lifetime, while optimizing scheduled maintenance. This valuable in- formation can be easily classifi ed and retrieved anytime allowing comprehensive data analysis and comparisons throughout the lifetime of the transformer.Multiple data logging, event recording, and trend-tracking features provide the critical information that you need. The Megalogger tracks transformer tempera- ture over extended periods of time, while the triggered logger supplies detailed short-term data from a pre-programmed event such as a temperature alarm and/or relays. Our event logger will provide you with a history for your Nortech Sentinel, recording alarms, data downloads, and all other events.The Nortech Sentinel can be used on-site and send collected data directly through the unit’s analog outputs. Remote communication is also possible with its mo- dem or RS-232 interface and the Nortech Commander software. Moreover, up to 32 units can be networked with the RS-485 interface, providing integrated access to 192 points of temperature data from transformers, LTCs, and bushings.A 19-inch rack mount chassis (optional) or NEMA-4 enclosure (optional) allow you to place the Nortech Sentinel where you need it most. The Nortech Sentinel signal conditioner offers full compatibility with our TPT-32 sensors without any re-cali- bration. This product joins our cost effective Nortech TT solution for small, me- dium and distribution transformers. FISO offers a 4 year warranty on all Nortech signal conditioners.

Applications

Power transformer temperature monitoring Core Windings Bushings Load Tap Changer temperature monitoring Contacts Oil High voltage testing Generators Transmission lines High voltage cables Switchgears

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