745-W2-P5-G5-HI-A-R-E Multilin Transformer Protection Relay, China 745-W2-P5-G5-HI-A-R-E Multilin Transformer Protection Relay Manufacturers, Suppliers, Factory

Overview

Place of Origin:	USA
Brand Name:	GE
Model Number:	745-W2-P5-G5-HI-A-R-E
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Part Number	745-W2-P5-G5-HI-A-R-E
Part Type	Multilin Transformer Protection Relay
Series	745 Transformer Protection System
Chassis	745 SR Series
Dimensions	21.5 x 23 x 25 cm
Weight	7.52 kg
Voltage Input	60–120 V
Control Power Range	90–300 V DC; 70–265 V AC @ 48–62 Hz
Software Version	EnerVista 745
Display Type	40-character LCD (enhanced front panel display)
Protection Functions	Restricted ground fault protection
Inputs/Outputs	Analog inputs and outputs
Protection Rating	IP40
Operating Temperature	-40°C to +60°C

Description

The 745-W2-P5-G5-HI-A-R-E is a high-performance Transformer Protection Relay belonging to the 745 series, specifically designed for comprehensive monitoring and protection of various power transformers. This relay integrates multiple protection functions, notably built-in restricted ground fault protection, effectively compensating for the shortcomings of standard differential protection in near-neutral point fault detection.

Applications

Integrated Steel Plants: Provide interference-resistant signal monitoring for electric arc furnace transformer systems.

Coal-fired Power Plants: Monitor generator transformers and transmit temperature and pressure data to control rooms.

Large Petrochemical Plants: Implement alarm and interlock protection in distributed power systems for continuous operation.

Compliance and Physical Design

Standards Compliance: This unit meets applicable IEEE, ANSI, and NEMA standards. Users should also check local codes for compliance.

Standard SR-Series Arrangement: It's built with a standard SR-series arrangement, including a draw-out relay and a companion case.

Mounting Flexibility: The 745-W2-P5-G5-HI-A-R-E can be mounted independently or alongside other SR-series units.

Wiring Diagrams: Wiring diagrams are found in original documentation (manuals/user guides), though actual layouts may vary.

Front Panel Interface: The front panel features a 40-character LCD display over three lines of LED indicators. It also includes an interface port for computer connection, along with control keys and a keypad for local control.

Troubleshooting and Maintenance Recommendations

Troubleshooting:

If the front panel displays "Ground Fault Trip," carefully check the CT polarity setting of the limited ground fault protection logic. If the LCD screen displays nothing, verify that the control power supply voltage is within the 90-300 VDC range.

Maintenance Recommendations:

It is recommended to regularly back up the logic configuration using EnerVista 745 software. Check the display clarity of the 40-bit LCD screen annually and confirm the impedance stability of the analog channels.

FAQ

Q: How is the 745-W2-P5-G5-HI-A-R-E physically designed and mounted?
A: It uses a standard SR-series draw-out relay with a companion case and can be mounted alone or with other SR-series units on a panel.

Q: What are the power requirements of the 745-W2-P5-G5-HI-A-R-E?
A: It supports 90–300 VDC and 70–265 VAC at 48–62 Hz.

Q: What logic elements are included in the 745-W2-P5-G5-HI-A-R-E?
A: It has 16 logic elements for FlexLogic equations.

Q: What environmental factors apply to the 745-W2-P5-G5-HI-A-R-E?
A: It is rated IP40 and should be kept away from high-moisture environments.