NEGISHI SEISAKUSHO SRT-2 MARINE SPEED RELAY

Negishi Seisakusho SRT‑2 is a rugged marine speed monitoring relay (overspeed protection unit) manufactured by Negishi Seisakusho Japan, widely used for marine diesel engine propulsion control systems. This speed relay module receives pulse signal from engine speed pickup sensor, continuously monitors crankshaft rotational speed, executes overspeed alarm and emergency trip logic. This speed relay is type approved by NK (Nippon Kaiji Kyokai), equipped with relay contact outputs for engine slowdown and fuel cut-off safety interlock. This speed relay is conformal coated to withstand salt mist, vibration and high temperature inside marine engine control cabinet.

This unit is a vital marine engine protection spare part for merchant vessel and offshore platform engine control panel overhaul. The marine engine protection spare part tracks engine RPM in real time. When engine rotational speed exceeds preset overspeed threshold, it triggers audio/visual alarm and emergency shutdown of marine diesel engine. The marine engine protection spare part records overspeed fault events for troubleshooting and vessel survey inspection. The marine engine protection spare part can replace faulty unit to restore engine overspeed safety protection function.

It delivers reliable engine speed monitoring & overspeed protective trip control for marine propulsion systems. The engine speed monitoring & overspeed protective trip control converts pulse pickup signal into accurate engine speed reading. The engine speed monitoring & overspeed protective trip control provides independent overspeed protection for main engine as required by SOLAS marine safety code. The engine speed monitoring & overspeed protective trip control sends alarm signals to bridge console, local mimic panel and PAGA system.

SRT-2 speed relay is mounted inside marine engine control cabinet. It is original Negishi Seisakusho spare part for marine diesel engine overspeed protection system.