Description
DEIF
TYPE: RMV-142D
100011176.10
VOLTAGE RELAY
FEATURES:
UNDER- AND OVER-VOLTAGE.
U>: 100 TO 120 %, U<: 80 TO 100 %.
SINGLE PHASE MEASUREMENT.
UNDER-VOLTAGE/OVER-VOLTAGE (U< + U>)
ANSI CODE 27 AND 59
3-PHASE MEASUREMENT
LED INDICATION OF FAULT CONDITION
TIMER-CONTROLLED TRIPPING
LED INDICATION FOR ACTIVATED RELAY
35 MM DIN RAIL OR BASE MOUNTING
TECHNICAL SPECIFICATIONS:
MEAS VOLTAGE: 400 VAC
MODULE: 400V
SUPPLY: 24VDC
COUPLING: DELTA
The DEIF RMV-142D is a precision voltage monitoring relay designed to protect electrical systems from potentially damaging under-voltage and over-voltage conditions. Classified under the Marine Control System category, this relay is widely deployed in shipboard power management and generator control panels where voltage stability is critical to safe and continuous vessel operation. Its dual-function protection capability — conforming to ANSI codes 27 and 59 — makes it an essential component in maintaining electrical integrity across onboard distribution and automation systems.
Key Features
✓ Provides combined under-voltage and over-voltage protection with adjustable thresholds: over-voltage from 100–120% and under-voltage from 80–100%, supporting fine-tuned system protection to match vessel-specific requirements.
✓ Operates on a 400VAC measurement input with a 24VDC supply voltage and delta coupling configuration, making it compatible with standard three-phase marine electrical distribution arrangements.
✓ Features both single-phase and three-phase measurement capability, LED fault indication, and timer-controlled tripping — enabling reliable, configurable response to voltage deviations without nuisance tripping.
✓ Mounts on a standard 35mm DIN rail or via base mounting, allowing flexible integration into existing marine control panels, switchboards, and automation enclosures with minimal installation complexity.
✓ As a DEIF product, the RMV-142D is engineered for demanding marine environments and is intended as a direct replacement or upgrade component in DEIF-based control and power management systems, subject to confirmation of system compatibility.
Marine Applications
✓ Generator control panels and automatic mains failure (AMF) systems on merchant vessels, where stable voltage monitoring is essential for power continuity and load protection.
✓ Shipboard switchboards and main distribution boards on offshore support vessels, tankers, and bulk carriers requiring reliable voltage relay protection across all operational modes.
✓ Power management systems (PMS) on cruise ships, ferries, and RoPax vessels where voltage anomalies must be detected and isolated rapidly to prevent cascading electrical faults.
✓ Auxiliary machinery control panels on naval auxiliaries, dredgers, and platform supply vessels where three-phase electrical monitoring is integral to safe machinery operation.
✓ Retrofit and upgrade projects on ageing tonnage seeking to replace end-of-life voltage protection relays with a compatible, modern DEIF unit — subject to panel and system configuration review.
Why Marine Engineers Choose
Marine engineers and electrical officers specify the DEIF RMV-142D for its dual-threshold voltage protection, clearly adjustable set points, and straightforward DIN rail installation. Its LED status indication and timer-controlled tripping logic reduce diagnostic time during fault conditions, supporting faster response and reduced downtime in critical shipboard electrical systems.
Ideal For
Merchant vessels, offshore support vessels, tankers, bulk carriers, ferries, cruise ships, dredgers, and platform supply vessels operating DEIF-based power management or generator control systems requiring voltage relay protection.
Technical Support & Compliance
Technical assistance is available to support remote troubleshooting, onboard commissioning, relay testing, retrofit integration, and system compatibility verification for the DEIF RMV-142D. Repair and reconfiguration options may be available depending on fault type and scope, subject to confirmation. To confirm suitability for your application, buyers are encouraged to share nameplate photographs, the full part number, panel drawings or wiring diagrams, the DEIF system model and software version where applicable, and vessel name or IMO number. All compatibility assessments are provided subject to confirmation based on the information supplied.
