Description
DEIF
TRANSAL
TYPE: ACV-2 TB
PROTECTION RELAY AND CONTROLLER
MODEL: 23 A
NO.: 69479-25
RELAY 1: MIN A
TC 0-20 SEC
INPUT 1: 0-100 V
OUTPUT: 0-1 V DC
LOAD, RL: MIN 200 Ω
AUX.SUPPLY: 24 V DC 6VA
The DEIF Transal ACV-2 TB is a protection relay and controller designed for voltage monitoring and automated protection functions within marine control systems. Operating as a dedicated AC voltage protection unit, it provides minimum voltage detection with an adjustable time constant, making it a critical component in safeguarding electrical machinery and power distribution equipment onboard vessels. As part of a Marine Control System, this unit plays an essential role in maintaining operational integrity by responding rapidly to undervoltage conditions and delivering a stable analogue output signal for downstream control or monitoring functions.
Key Features
✓ Functions as an AC voltage protection relay with minimum voltage (MIN A) relay output, featuring an adjustable time constant of 0–20 seconds for configurable trip delay response.
✓ Accepts an input voltage range of 0–100 V AC with a 0–1 V DC analogue output and a minimum load resistance of 200 Ω, as specified in the original product data.
✓ Powered by a 24 V DC auxiliary supply rated at 6 VA, making it compatible with standard DC control panel power rails commonly found in marine switchboards and automation cabinets.
✓ Compact relay and controller format suitable for panel mounting within enclosed electrical control rooms or machinery space control stations; environmental ratings are subject to confirmation based on installation configuration.
✓ Replacement or retrofit suitability for existing DEIF Transal-based protection systems should be confirmed against original panel drawings, system model, and nameplate data prior to installation.
Marine Applications
✓ Undervoltage protection for AC generator and busbar circuits aboard merchant vessels, offshore support vessels, and ferry operations.
✓ Integration within automated power management and switchboard protection systems where voltage threshold monitoring is required.
✓ Monitoring and protection duties in auxiliary machinery control panels, including pump motors, compressors, and HVAC systems onboard ship.
✓ Suitable for use in engine room control cabinets and cargo handling control systems where reliable AC voltage supervision is operationally critical.
✓ Applicable to newbuild and retrofit installations across a broad range of vessel types requiring DEIF-compatible protection relay solutions within their electrical control architecture.
Why Marine Engineers Choose
Marine engineers specify the DEIF Transal ACV-2 TB for its reliable voltage protection functionality, straightforward analogue output interface, and compatibility with established DEIF control system architectures — delivering dependable protection performance in demanding shipboard electrical environments.
Ideal For
Merchant vessels, offshore support vessels, ferries, bulk carriers, tankers, and any vessel class operating DEIF Transal-based marine control and protection systems requiring AC voltage relay functionality.
Technical Support & Compliance
Technical support is available for remote troubleshooting, onboard commissioning guidance, system integration, and retrofit or upgrade assistance related to this protection relay. Repair and bench testing services may be available subject to confirmation. To verify compatibility with your existing installation, buyers are encouraged to share nameplate photographs, original part numbers, panel drawings, system model and software version details, vessel name, IMO number, and the specific scope of the replacement or upgrade — all compatibility assessments are subject to confirmation based on documentation provided.
