Application Scenarios In a mid-sized manufacturing plant with on-site generator backup, the facility’s main switchgear experienced recurring issues with voltage asymmetry that the existing protection scheme failed to detect. Phase imbalances caused by uneven single-phase loads were gradually degrading motor insulation and causing nuisance trips on sensitive CNC equipment. After installing the MRU3-11D as…
Application Scenarios A combined-heat-and-power plant operating a 4 MW synchronous generator experienced repeated stator insulation deterioration on the generator following excitation regulator disturbances. The original protection scheme used a single-stage overvoltage relay with a fixed instantaneous trip, which either failed to catch a slowly rising no-load overvoltage condition or, on one occasion, tripped the…
Application Scenarios In a petrochemical facility’s catalytic cracking unit in southern China, the medium-voltage switchgear associated with the main air blower frequently experienced voltage protection false trips. The site had numerous variable frequency drive devices, causing severe harmonic pollution in the power grid. The existing voltage relays could not effectively distinguish between real faults…
Application Scenarios In a recent upgrade at a combined heat and power (CHP) plant in Northern Europe, engineers needed to enhance the protection of their generator sets against voltage fluctuations caused by grid disturbances. The WOODWARD MRU3-11D was integrated into the protection scheme to monitor terminal voltage and trip the generator breaker in case…
Application Scenarios In a natural gas compression station, a gas turbine-driven centrifugal compressor must maintain a constant discharge pressure despite fluctuations in pipeline demand. When downstream consumption suddenly increases, the turbine speed drops, causing discharge pressure to fall. The MRD1G5MA continuously monitors turbine speed through a magnetic pickup sensor and recalculates the fuel control…
Technical Specifications Parameter Value Product Model 8256-016 Manufacturer Woodward Inc. (USA) Product Type EPG Rotary Electric / Servo Actuator (Model 1724 base) Supply Voltage 24 VDC nominal (20–28 VDC continuous, 32 VDC transient 100 ms) Rated / Peak Power 60 W rated; 95 W maximum transient Operating Current ≤0.8 A static hold; 3.6 A…
Technical Specifications Parameter Name Parameter Value Product Model MRD1G5MA Manufacturer Woodward Product Type Digital Speed Control Module Input Voltage 24 VDC Power Consumption 10 W Communication Ports 2 × Ethernet, 1 × RS-232, 1 × RS-485 Communication Protocols Modbus, CAN Operating Temperature -40°C to +70°C Dimensions 273.6 × 214.1 × 59.2 mm Weight 1.5…
Technical Specifications Parameter Name Parameter Value Product Model 5441-691 Manufacturer Woodward Product Type Relay Field Terminal Module (FTM) Compatible Platforms MicroNet Simplex, MicroNet Plus, 505 / 505E Relay Channels 16, socket-mounted Contact Form DPDT (double-pole, double-throw) Coil Supply 24 VDC Coil Current Approximately 80 mA per relay Nominal Input Range 18–32 VDC Isolation 1000…
Technical Specifications Parameter Name Parameter Value Product Model DTSC-200-55B Part Number 8440-1779 Manufacturer Woodward Product Type Digital Transfer Switch Controller (ATS) Supply Voltage 12/24 VDC (6.5 to 40.0 VDC operating range) Current Measurement ../5 A (5A CT input) Voltage Measurement 120 VAC (max. 150 VAC) and 480 VAC (max. 600 VAC) dual range Frequency…
Product Overview The Woodward IRI1-I5E05D is a high-performance microprocessor-based earth fault (ground fault) protection relay, designed to deliver highly sensitive ground fault detection and reliable protective tripping for industrial AC power systems. As a core member of the Woodward IRI relay protection family, the Woodward IRI1-I5E05D operates on the residual (zero-sequence) current principle, continuously…
