SR745-W2-P5-G5-HI-A transformer protection relay

Description

SR745-W2-P5-G5-HI-A transformer protection relay

Product description
Part of the General Electric Multilin 745 series, the 745-W2-P5-G5-HI-A is A transformer protection relay that can be used as a stand-alone unit or component in an automated substation. The device utilizes highly configurable set points to monitor, record, and respond to changing conditions in transformers, autotransformers, and/or reactors. Since the transformer protection system has a built-in metering function, the device helps to reduce the costs associated with auxiliary metering equipment.

745-W2-P5-G5-HI-A is a two-winding per phase version of this model. The phase current input rating for both windings is 5A, indicated by the “P5” modifier in the model number. This version of the device also includes analog input/output, which is an additional feature of the basic model. An optional universal sensor input can monitor user-set quantities and can then be used for the protection function of GE Multilin’s 745 relays.

This special model 745 comes with seven sensor output channels that can be individually programmed for ranges of 4 to 20mA, 0 to 20mA, 1 to 10mA, and 0 to 1mA. The 745-W2-P5-G5-HI-A differs from its low-power counterparts by offering a control power range of 90 to 300 VDC; 70 to 265 VAC at 48 to 62 Hz instead of 20 to 60 VDC; 20 to 48 VAC, 48 to 62 Hz. This makes it the best choice for high-control power transformer systems.