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IOFT2020 Winding Temperature Optical Fiber Online Monitoring System

IOFT2020 Winding Temperature Optical Fiber Online Monitoring System

On-load tap changer (On-load Tap Changer-OLTC) is a key component of on-load tap-changer, and the failure rate is up to 20%, accounting for 40% of the total fault of the on-load tap-changer. The monitoring of the on-load tap-changer is particularly important for reducing the failure rate of the transformer.

The on-load tap-changer on-line monitoring system (IED) obtains data information (current and voltage rms) from the process layer network and obtains the on-load tap-changer gear status from the on-load switch controller and records the number of operations, OLTC anomalies State (such as power failure, refused to move) and other information; the system can increase the controller to achieve on-load tap-changer on-site control and based on network control.

Technical indicators
Serial number Monitoring project Measuring range
1 Number of channels 2,4,6,8
2 Measuring range -30℃~200℃
3 Accuracy 2℃
4 Front panel display Large1"LED display (per channel)
5 Probe signal strength read All channels have separate signal buttons
6 Input power Universal AC / DC [90-265VAC / DC] power supply
7 Number of relays 6 C-type programmable cooler control and alarm set points
8 Temperature data storage Save the temperature data for more than one year, read once every minute and keep the maximum temperature of each channel until the user is reset
9 LED alarm indicator One for each relay
10 System fault relay 1 type C relay
11 System fault indicator 2 LEDs (green for good operation, red for failure)
12 Overvoltage protection 3000V(IEEE C37.90.1.1989)
13 Connector All ring terminal blocks
14 Operating ambient temperature -40℃~+70℃
15 Storage temperature -40℃~+85℃
16 communication Industrial Ethernet / fiber interface, support IEC61850


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