Product Overview
Adopting a compact industrial modular structure, it supports single-phase measurement, precise threshold setting and delay trip control, with built-in LED fault status indication. It supports standard 35mm DIN rail mounting and base mounting, featuring strong anti-vibration and anti-interference performance. Suitable for long-term continuous operation of power stations, it serves as an original core spare part for power generator relay protection systems, widely used in new installation, replacement and upgrading of power station protection systems.
2. Technical Parameters
3. Product Features
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Precise and Adjustable Parameters: Continuously adjustable 0~25% under-excitation threshold with delay trip function adapts to generator sets of different power levels and working conditions, ensuring accurate and reliable protection without misoperation or refusal of operation.
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Flexible Installation and Adaptation: Compact size with simple wiring, compatible with standard DIN rail and base mounting. Ideal for renovation and upgrading of new and old control cabinets, matching most power station relay protection cabinets.
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Grid System Safety Guarantee: Effectively prevents reverse reactive power transmission from faulty generators to the grid, avoids grid voltage fluctuation and system oscillation risks, and improves the overall stability of grid-connected power stations.
DEIF RMQ 111D under-excitation protection relay is widely used in industrial grid-connected generator sets, thermal/gas self-provided power stations, offshore marine power stations, offshore platform power generation systems, emergency standby power stations, and industrial and mining self-provided power generation systems. It provides professional under-excitation and loss-of-excitation fault protection for various synchronous grid-connected generators, solving problems such as unit overheating, unstable grid connection and abnormal grid reactive power disorder caused by excitation abnormalities. It is a core protection device for power system relay protection, unit safety interlock and stable power station operation.
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