Description

Not for real photos. All pictures are for reference only.

The VM-751B1 is the earlier hardware revision of the Shinkawa VM‑751 series AC power supply, designed for the VM‑761B turbine supervisory instrumentation rack. It accepts universal AC input and generates stabilized +5 V and ±15 V DC rails to power vibration, position, speed and relay monitor modules. This B1 version supports hot‑swap and redundant parallel operation; the newer VM‑751B2 is its upgraded successor with refined component layout and improved surge tolerance. It follows API 670 and is widely stocked as legacy replacement spare for steam turbines, generators and centrifugal compressors in power and petrochemical plants.

Technical Specifications

• Brand: Shinkawa Electric
• Model: VM-751B1
• Warranty: One Year
• Condition: 100% New & Original
• Input/Output: 100–240 VAC, 50/60 Hz; regulated +5 V, ±15 V backplane outputs; power‑OK relay contact
• Operating Temp: 0°C to +60°C
• Communication: No fieldbus, dedicated VM‑7 backplane power distribution
• Rated Power: 180 W
• Hot Swap: Yes
• Redundancy: Supports dual redundant PSU configuration
• Indicator: Front “POWER OK” status LED
• Protection: Overvoltage, overcurrent, short-circuit, internal fuse protection
• Mounting: Front-load dedicated PSU slot for VM‑761B rack
• Compatibility: VM‑7B series monitors (VM‑701B, VM‑703B, VM‑722B, VM‑742B)
• Revision Note: VM‑751B1 = older revision; VM‑751B2 = updated replacement variant
• Standards: API 670, CE
• Origin: Japan
• Lifecycle: Legacy spare for existing VM‑7 installations