Franklin Grid INCON 1250 LTC

Description

The Franklin Grid INCON® 1250-LTC Programmable Load Tap Changer (LTC) Position Monitor relays critical position information between a distribution transformer LTC and the LTC controller, enabling utilities to run their transformers as efficiently as possible.

With over 40 years of proven service in over 33,000 utility transformers around the globe, the 1250-LTC does so much more than just monitor tap position. It is a vital tool that utilities use to predict transformer maintenance and prevent the failure of their LTC’s.

The 1250-LTC is a highly advanced solid-state instrument, which measures the absolute position of a Synchro Transmitter connected to the LTC drive shaft. It provides a user-definable visual digital display indication of tap position as well as both analog and digital signal outputs suitable for a variety of monitoring and control applications. LTC position monitors can feed data directly into a SCADA and MODBUS system to help utilities balance loads, regulate line voltage, reduce costs, and deploy predictive maintenance.

Resolution (1250B & 1250-LTC)  

± 0.001% of full scale or 6 arc minutes

Accuracy       

+/-0.02% of full scale, maximum (0.01% typical)

Temperature Drift 

+/-0.01% per °C

Operating Temperature

0 ° to 55 °C

Humidity

10% – 90% non condensing

Weight   

24 ounces

Voltage  

117 +/- 10%

Frequency     

47 – 63 Hz

Load

8 Watts, maximum

Display Type 

5-digit LED

Digit Height   

0.56 inch (14.2 mm)

Viewing Distance  

23 feet

Decimal Point (1250B)  

Field programmable

Optional Analog Outputs     

+/- 1 mA, 0-1 mA, 0-2 mA, 4-20 mA (requires 15 to 24 VDC external loop power)

Compliance   

10 Volts (0-1 mA, ± 1mA, 0-2 mA)

500 Ohms (4-20 mA)

5 mA (0-10 VDC, ± 10 VDC) 1511-LTC

Resolution    

12 bits (± 0.025% of full scale)

Optional Hi/Lo Relay Contact Rating  

3A @ 125/250 VAC (resistive), 30 VDC

Communication Options  RS-232 (ASCII)

RS-485 Full Duplex (MODBUS)