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GE Multilin 745-W2-P5-G5-HI-A-E — Transformer Protection Relay
The 745-W2-P5-G5-HI-A-E is a GE Multilin (GE Grid
Solutions) 745 Transformer Protection Relay configured by a dash-separated
option string. This is the same GE relay/protection domain as the 336A5199AMP1 already confirmed in this list, but in the modern Multilin product line rather than the older 336A… style. The
number breaks into the base model 745 followed by option segments
(W2, P5, G5, HI, A, E) that specify the hardware, sensing, display and
communication configuration. The 745 relay provides differential and backup protection for
power transformers. Typically sourced as a genuine spare for existing GE Multilin 745
installations.
- GE Multilin 745 transformer protection relay
- Same GE protection domain as 336A5199AMP1
- Differential + backup transformer protection
- Dash-separated option string configuration
- Protection relay spare
Key Features & Functions
Transformer Differential Protection
Provides percentage differential protection as the primary function of the 745 relay for power transformers.
Backup Protection
Includes overcurrent and other backup protection elements to complement the main differential function.
Option-String Configuration
Each dash-separated segment specifies a hardware or feature option (module, sensing, display, communication), so one number fully defines the relay.
Communications & Metering
Typical Multilin 745 builds provide metering, event recording and serial/SCADA communication for integration into a protection and control scheme.
Technical Specifications
| Model Number | 745-W2-P5-G5-HI-A-E |
|---|---|
| Base Model | 745 |
| Manufacturer | GE Multilin (GE Grid Solutions) |
| Product Line | Multilin transformer protection relay |
| Primary Function | Transformer differential + backup protection |
| Option Segments | W2, P5, G5, HI, A, E (confirm each) |
Source note: The 745 is a GE Multilin transformer protection relay and
uses the dash-separated option-string convention. The exact meaning of each option segment
(W2, P5, G5, HI, A, E) was not individually confirmed from an
official datasheet and must be verified before ordering or replacing.
Typical Application Scenarios
- Power Transformer Protection: differential protection of utility and industrial transformers.
- Substation Protection & Control: integration into protection and SCADA schemes.
- Industrial Power Systems: transformer protection in plants and facilities.
- Spare Replacement: replacing a relay in an existing GE Multilin 745 installation.
Frequently Asked Questions
What is the 745-W2-P5-G5-HI-A-E?
It is a GE Multilin 745 transformer protection relay — base model 745 — configured with the option segments W2, P5, G5, HI, A and E.
How does it relate to the 336A5199AMP1 in this list?
Both are GE protection products. 336A5199AMP1 is in GE’s older 336A… relay/
control style, while this is a modern Multilin 745 relay. Confirm each product’s details in
the GE documentation.
What does the 745 relay protect?
Power transformers, using percentage differential protection plus backup elements. Confirm the exact feature set in the GE Multilin 745 manual.
What do the option segments mean?
Each dash-separated code specifies a hardware or feature option. All must match the installation. Confirm in the official ordering documentation.
Where can I find the official documentation?
Official manuals are available from GE Grid Solutions / Multilin and authorized distributors. Verify all specifications there before purchase.
