The TC-100 transformer temperature controller monitors up to three (3) ventilated dry type transformer windings and (1) ambient temperature. The TC-100 operates relays by comparing the highest winding temperature to stored set point temperatures and displays four (4) thermocouple inputs as well as the stored maximum temperature and its associated winding. The unit provides fans, alarm and trip output relays. Up to 2-fans can be controlled via the TC-100. Each fan operating contact is fuse protected. A yellow LED indicates that fans are on. A fan exerciser turns the fans on automatically at periodic intervals to prevent fan motor seizing (on-time and interval is programmable). Form C contacts are provided for notification of alarm conditions. A red LED illuminates to indicate that the alarm is actuated. An internal audible alarm also sounds when the unit goes into alarm condition. This audible buzzer can be silenced without canceling the alarm. The alarm and trip relays can be configured as a fail-safe relay (normally energized when the unit is powered up). For example if the alarm relay was configured as a fail-safe; If supply control power to the TC-100 is interrupted, the alarm relay changes state for notification of this condition. The alarm circuit is also used for notification of an open or missing thermocouple. If a thermocouple were to open, the alarm relay operates and the corresponding channel will read :-" on the LED display. It is important to note that a failed thermocouple will not cause the device to trip the transformer off-line. Form C contacts are provided to trip the transformer off-line if any of the winding temperatures exceed the trip setting. A red LED indicates that the trip relay has actuated. A test function is provided to: test the digital display and all of the LEDs, simulate over-temperature conditions; and check the internal temperature of the monitor. A 4 to 20 mA analog signal is provided for remote indication or for use with SCADA systems. The TC-100 has built in monitoring functions and logging functions to help you shed some light on the unknowns of the operation of your transformer. Temperature trending lets you understand the hour of the day that the transformer runs hotter and modify its loading to extend the life of your transformer; logging information lets you restore the operation of your system faster, by letting you correlate tripping and alarming events to the overall conditions of your system; and fan wear information can be used to perform preventive maintenance to increase the uptime in your transformers.
EATON Temperature Controller, +/-1 min Accuracy, Analog/Relay Output, On/Off, 15 VA, 120/240 VAC, LED, Flush Mount, 4.95 in L x 8.82 in W x 15.12 in H
| Accuracy | : | +/-1 min |
| Dimensions | : | 4.95 in L x 8.82 in W x 15.12 in H |
| Display Type | : | LED |
| Mounting Type | : | Flush |
| Power Consumption | : | 15 VA |
| Switch Function | : | On/Off |
| Voltage Rating | : | 120/240 VAC |
| Output | : | Analog/Relay |
- Thermocouple inputs (E or K-type thermocouples)
- Automatic correlation throughout entire temperature range to compensate for thermocouple non-linearity
- Programmable on and off set points
- Alarm relay for remote monitoring
- Trip relay for remote monitoring
- 2-fan power relays
- Fan failure detection to start a backup fan or alarm
- Fan exerciser (cycle time and duration) to reduce fan wear
- Fans can be operated automatically or manually
Instruction/Installation Manual