745-W2-P5-G5-HI-A-E-H

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This enhanced model of General Electric Multilin's 745 series is intended to manage and safeguard transformers, autotransformers, and reactors. These features help to extend system life by minimizing strain on transformer elements.

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  • Part Number: 745-W2-P5-G5-HI-A-E-H
  • SKU: 745W2P5G5HIAEHGM
  • Manufacturer: GE Multilin
  • Series: 745 Transformer Protection System

745-W2-P5-G5-HI-A-E-H Technical Specifications

Windings Per Phase 2
Resistant Temperature Device (RTD) Type 3 wire; 100 Ω Nickel, 120 Ω Nickel, 100 Ω Platinum
Analog Output Maximum Load 10 kΩ at 0 to 1 mA, 600 Ω at 4 to 20 mA
Maximum Continuous Voltage Output 273 V
Display Type 40 character Enhanced LCD
Dimensions 9”H, 7 ⅛”D, 7”W
Control Power Range 90 to 300 V DC; 70 to 265 V AC at 48 to 62 Hz

About the 745-W2-P5-G5-HI-A-E-H

This enhanced model of General Electric Multilin’s 745 series is intended to manage and safeguard transformers, autotransformers, and reactors. The 745-W2-P5-G5-HI-A-E-H employs adaptive features to respond to system events in real time. Some of these features include:

  • Dynamic CT Ratio Mismatch Correction

  • Overexcitation Protection

  • Transformer Overload Protection

  • Frequency Rate-of-Change Detection

These features help to extend system life by minimizing strain on transformer elements. Other features such as Hottest Spot Monitoring can give users insight into potential issues before they worsen.

The relay’s Total Harmonic Distortion (THD) feature is able to calculate the amount of distortion present in system signals and reduce unnecessary interference. Total Harmonic Distortion is calculated for each winding and then evaluated according to user settings (setpoints). These calculations adhere to IEEE standards. The range of THD for this part is 0.00 to 99.9% and the accuracy is ±1% of full-scale at 0.5 × CT.

Equipped with a protective conformal coating, this model is well-suited for harsh operation environments. Conformal coating is a thin, polymeric layer that guards the relay against environmental threats such as dust, temperature, humidity, abrasion, and chemicals. This conformal coating is not a sealant, and will therefore allow moisture to dissipate and prevent it from remaining in the board.  

This model of the 745 series comes with an enhanced LCD, which is noticeably wider than the base model. The enhanced version of the unit also sees an expansion to the keypad, considerably increasing the functionality of the relay when manually entering setpoints on the device and for purposes of reviewing system values.

Frequently Asked Questions about 745-W2-P5-G5-HI-A-E-H

What options differentiate the 745-W2-P5-G5-Hi-A-E-H Multilin Transformer Protection System from other management relays?
The 745-W2-P5-G5-Hi-A-E-H Multilin Transformer Protection System has the A, E, and H options as referenced within the part number. The A option specifies an analog input/output feature. The E option specifies an an enhanced display with a larger LCD.  Finally, the H option designates a harsh coating for additional environmental protection. This coating is protection for harsh conditions or chemical conditions in other words. 
What does a three or a two winding transformer protection Multilin System mean? Which one does the 745-W2-P5-G5-Hi-A-E-H have?
The Multilin 745 transformer protection systems are differentiated by either a two winding or a three winding transformer management relay. WIthin the part number this difference is indicated by either a W2 or a W3. In the case of the 745-W2-P5-G5-Hi-A-E-H, a W2 is observed within the part number. Thus, this transformer protection system is two winding, which means there are two windings per phase. 
What are the ranges of the analog input for the 745-W2-P5-G5-Hi-A-E-H?
The analog input/output option for the 745-W2-P5-G5-Hi-A-E-H GE Multilin transformer protection system are DC mA for the input. This input ranges from 0-1 mA, 0-5 mA, 0-20 mA, or 4-20 mA that is programmable within the transformer protection system. Its conversion range is from 0-21 mA.

Reviews For 745-W2-P5-G5-HI-A-E-H

Internal Review
(4.0)

Due to high configurability, the 1601-0161-A7 instructional and informational manual cannot display all possible wiring connections. Users should ensure thoughtful wiring to extend system life and reduce system strain. -AX Control Tech Team

Repair Services For 745-W2-P5-G5-HI-A-E-H

Type Lead Time Price Action
Repair Service 1-2 weeks $1810

Our highly skilled technicians can repair your 745-W2-P5-G5-HI-A-E-H. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

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