Description

Overview

Essential details：SR745-W2-P1-G1-HI-A-L-R 745 SR Series chassis which protects the relay

Product Description

The highly configurable 745-W2-P1-G1-LO-E is a Transformer Protection System designed by General Electric Multilin and part of their 745 series. The relay’s FlexLogic™ technology can be used in tandem with its setpoint capabilities to create a versatile programming structure specific to the particular system’s needs. The 745-W2-P1-G1-LO-E’s more general transformer management features include underfrequency and overfrequency protection, transformer overload protection, CT correction factors, and more.

The device is encased in an 745 SR Series chassis which protects the relay during drawout operations and discourages dust from entering and damaging the relay. The chassis features a glass front so that users can monitor the various LEDs located on the front panel of the relay, which are able to indicate different system statuses and also alert users when errors arise. The LEDs can be green, amber, or a solid red depending on the corresponding status, providing an easy reference point for system health.

The relay is able to function in a range of conditions, operating comfortably at temperatures ranging from -40°F to +140°F. The 745-W2-P1-G1-LO-E can also sustain humidity up to 90% non-condensing and altitudes of up to 2000m. Operating the relay in conditions outside of the recommended parameters will lead to system damage over time.

SR745-W2-P1-G1-HI-E-H

Product parameter

Weight	4.8kg
Solid State Output Maximum Ratings	make and carry 15 A at 250 V DC for 500 ms
Overload Withstand	1 second at 80 times rated current, continuous at 3 times rated current
Analog Output Maximum Load	10 kΩ at 0 to 1 mA, 600 Ω at 4 to 20 mA
Features	Enhanced LCD and Keypad
Dimensions	9”H, 7 ⅛”D, 7”W
Chassis	745 SR Series

APPLICATION

Frequently Asked Questions about 745-W2-P1-G1-LO-E

What specifications apply to the ethernet for the 745-W2-P1-G1-Lo-E Multilin option?

Actually the E does not stand for Ethernet. The E indicates that the 745-W2-P1-G1-Lo-E Multilin includes the enhanced display option with the larger LCD. For a transformer protection system to come with the Ethernet the part number must indicate a T, as opposed to an E. In that case, the transformer management relay would have an ethernet with a 10Base-T RJ45 connector. The ethernet would be Version 2.0 / IEEE 802.3 and with a Modbus TCP/IP.

How does the 745-W2-P1-G1-Lo-E Multilin address false tripping during inrush?

The 745-W2-P1-G1-Lo-E Multilin has many adaptive features that make it a great transformer protection system with regard to protection and management of various size power transformers. It can monitor both individual and total harmonic distortion in one relay management system. Specific to your question, it addresses false tripping during inrush with adaptive harmonic restraint. It can also adjust the pickup setting of adaptive time overcurrent elements in the event that load currents need to be supplied with a content that is highly harmonic.

How low is the control power for this transformer protection 745-W2-P1-G1-Lo-E Multilin?

The control power includes a range from 20 to 60 DC (volt), AC 20 to 48 (volt), with 48-62 Hertz. This range is for a transformer protection system with a low control power as is the 745-W2-P1-G1-Lo-E Multilin.

Shipping

Superiority products SR745-W2-P1-G1-HI-A-L-R 745 SR Series chassis which protects the relay

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