Shopify Product Title

ABB SPAU140C SPACOM Series Synchro-check and Voltage-check Relay

Product Description

The SPAU140C (Model: SPAU140C) is a high-precision numerical synchro-check and voltage-check relay from ABB’s renowned SPACOM series. Engineered for medium-voltage networks ranging from 0.4 kV to 36 kV, this module serves as a critical safety barrier to prevent unsafe synchronization when interconnecting two separate power sources or busbars. By continuously monitoring phase angle, frequency, and voltage differences, the SPAU140C (Part Number: SPAU-140-C) ensures that circuit breaker closure only occurs under optimal synchronized conditions.

Operating with a phase resolution of 0.1° and a rapid trip time of approximately 1 ms, the SPAU140C provides the deterministic reliability required for modern power distribution and industrial automation. It features dual-stage functionality, integrating both synchro-check and independent voltage-check logic to accommodate various busbar configurations (e.g., dead-bus/live-line or live-bus/live-line scenarios). Built to endure 24/7 operation in harsh electrical environments, this Japan-origin design supports the SPA bus protocol (RS-485) for seamless integration into centralized SCADA and DCS architectures.

Detailed Technical Specifications

• Manufacturer: ABB Group

• Model Number: SPAU140C

• Part Number: SPAU-140-C

• Relay Type: Numerical Synchro-check & Voltage-check

• System Voltage Range: 0.4–36 kV AC networks

• Rated Voltage Input (Un): 100/110/220 V AC (via Voltage Transformer)

• Frequency Range: 45–65 Hz (50/60 Hz nominal)

• Phase Difference Setting: Adjustable 5° to 50° (1° resolution)

• Voltage Difference Setting: Adjustable limits for safe closing

• Trip Time: 1 ms (Internal processing speed)

• Auxiliary Power Supply: 80–265 V AC or 18–80 V DC (wide-range version)

• Communication Port: RS-485 using SPA bus protocol

• Enclosure Protection: IP20 (Panel or Rack mounted)

• Operating Temperature: -10°C to +55°C

• Dimensions: 220 mm × 150 mm × 60 mm

• Net Weight: 1.5 kg (Shipping weight 5.4 kg / 11.99 lbs)