Description
Product Overview
The DEIF GEPIMAX-3N/2 is a legacy generator protection relay intended for electrical protection applications in power-generation systems. Its role is to monitor electrical operating conditions and support protective action according to the relay’s configuration and the connected control circuit. The GEPIMAX-3 family includes several model variants, so the full type designation matters when matching a spare part. Do not assume that all GEPIMAX units share identical sensing inputs, relay contacts, settings, or protection functions.
For maintenance and procurement teams, the key issue is matching the original relay’s electrical configuration to the generator installation. The available product listing associates the GEPIMAX-3N/2 with a 40–70 Hz operating-frequency range, and DEIF’s family datasheet provides dimensional drawings for the enclosure. However, those details alone do not establish the installed unit’s current-transformer ratio, voltage input, auxiliary supply, trip contact arrangement, or active protection settings. These must be checked against the nameplate, wiring diagram, and commissioning records before a replacement is selected.
The DEIF GEPIMAX-3N/2 belongs to an older product family that supplier documentation identifies as obsolete. DEIF’s GPU-3 appears in available listings as a newer alternative for some GEPIMAX-3 configurations, but this should be treated as a replacement candidate rather than a guaranteed direct substitute. A changeover may require a wiring review, parameter configuration, panel modifications, and a complete protection-function test. For an operating generator, confirm the replacement plan with the equipment documentation and a qualified protection engineer before taking the original relay out of service.
Product Introduction
The GEPIMAX-3N/2 is a DEIF generator protection relay used in generator-related electrical systems. Its exact protective functions and electrical interface must be confirmed from the original nameplate and circuit documentation.
When sourcing a replacement, check the sensing inputs, frequency range, auxiliary supply, contact configuration, and original settings. Because the product family is legacy equipment, evaluate any proposed GPU-3 replacement against the actual protection scheme rather than relying on model-family similarity.
Key Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | DEIF |
| Model | GEPIMAX-3N/2 |
| Product family | GEPIMAX-3 |
| Product type | Generator protection relay |
| Application | Generator and power-generation protection systems |
| Frequency range | 40–70 Hz listed for this model |
| Mounting | Panel-mounted enclosure |
| Approximate dimensions | 122 × 146.5 × 164 mm; verify drawing and unit |
| Approximate weight | 1.2 kg |
| Current input range | Not verified; check the unit label and configuration |
| Voltage input | Not verified |
| Auxiliary supply | Not verified |
| Relay contact rating | Not verified |
| Protection functions | Confirm the installed configuration and original documentation |
| Lifecycle status | Legacy/obsolete family reported in supplier listings |
| Possible successor | DEIF GPU-3; compatibility must be evaluated |
| Supplied condition | Not specified |
GEPIMAX-3N/2
Related Products
These models are related by manufacturer or application. They are not automatically interchangeable.
- GEPIMAX-3N — Related GEPIMAX-3 model; confirm the suffix and electrical configuration.
- GEPIMAX-3NGS/2 — Related model in the GEPIMAX family with its own configuration details.
- GEPIMAX-3NGS — Another legacy family variant; verify sensing inputs and function before considering substitution.
- GEPIMAX-3 — Base family designation used in older documentation.
- GPU-3 — DEIF product identified in supplier listings as a possible successor for obsolete GEPIMAX-3 units; application-specific engineering review is required.
- GPU-3-F1 — GPU-3 variant; confirm the option code and enabled protection functions.
- GPC-3 — DEIF generator paralleling controller, related to generator control but serving a different primary role.
- /2 range box — Related accessory/reference appearing in legacy GEPIMAX parts lists; confirm whether the original installation uses one.
Frequently Asked Questions
Q1. What is the DEIF /2 used for?
It is a generator protection relay for power-generation applications. The exact protection functions depend on the model configuration and installation, so verify the original documentation before describing or relying on specific trip functions.
Q2. Can I hot-swap this relay?
Do not assume hot-swap capability. Generator protection equipment is part of the electrical protection scheme. Follow the plant’s isolation and permit procedures, and ensure that required protection remains available while the relay is removed.
Q3. Can I replace the /2 with a ?
Possibly, but not as an automatic one-for-one substitution. Confirm the protection functions, current and voltage sensing, auxiliary supply, trip outputs, wiring, and required settings. Complete commissioning and protection tests before returning the generator to service.
Q4. Does the replacement require new firmware or parameter settings?
A universal firmware or parameter migration procedure has not been verified for this model. If replacing it with a different relay family, expect to review and potentially re-enter the protection settings. Preserve the original settings and test records before removing the existing unit.
Q5. How can I confirm the correct variant?
Photograph the complete model designation and nameplate. Compare the current-transformer ratio, voltage input, auxiliary supply, terminal arrangement, relay contacts, and panel dimensions against the original wiring diagram. The suffix “/2” should not be ignored when ordering.
Q6. Is the /2 still in production?
Available parts listings describe the family as obsolete. Confirm current support and sourcing status with DEIF or an authorized technical representative before planning a long-term replacement strategy.
Q7. What should I check when purchasing a legacy unit?
Confirm the exact model, serial number, condition, and test status. Request clear label photographs and a report showing that the unit has been inspected or functionally tested. For refurbished or surplus equipment, obtain written warranty and return terms, and avoid assuming that the original manufacturer warranty applies.
