Product Description

Product Parameters & Specifications

• Overcurrent Protection:
  • Three-phase low-set phase overcurrent unit: With definite time or inverse definite minimum time (IDMT) characteristic.
  • Three-phase high-set phase overcurrent unit: With instantaneous or definite time operation.
• Earth-fault Protection:
  • Low-set earth-fault unit: With definite time or IDMT characteristic.
  • High-set earth-fault unit: With instantaneous or definite time operation.
• Circuit-breaker Failure Protection: Built-in to enhance system security.
• Output Relays: Equipped with 2 heavy-duty relays and 4 signal output relays, supporting custom protection signal routing through an output matrix.
• Display and Interface: Digital display screen for real-time monitoring of measured values, set values, and fault record data. Front panel buttons support local parameter tuning and reset operations.
• Communication: Supports RS485 or fiber optic bus communication with a maximum transmission distance of 1200 meters (at 9600bps).
• Mechanical Characteristics: External dimensions 132mm x 105mm x 52mm or 100mm x 100mm, IP30 protection class, corrugated aluminum reinforced housing, 35mm DIN rail mounting, net weight of about 800g.
• Working Environment: Operating temperature range -10°C to 70°C (some data mention -40°C to +85°C wide temperature optional), relative humidity ≤90% (no condensation), storage temperature -40°C to 80°C.
• Electrical Parameters: Suitable for AC 50/60Hz, rated voltage 230V, load current does not exceed 100A single-phase three-wire terminal circuit.

Series

Features

• Selective Protection: Provides selective radiation feeder short-circuit protection and ground fault protection for various grounding systems.
• Integrated Protection Device: Includes overcurrent protection unit and ground protection unit with tripping and transmitting functions, suitable for single, two, or three-phase overcurrent protection application scenarios.
• Circuit Breaker Failure Protection: Built-in to enhance system security.
• Easy to Use: Simple operation with mature technology, focusing on overcurrent and ground fault protection.
• Digital Protective Relays: As one of the most commonly used digital protective relays on the market, the SPAJ 140 C offers a high degree of flexibility and reliability.
• Self-supervision System: Continuously monitors the operation of the electronics and the microprocessor to ensure system stability.
• Anti-interference Design: Passed CE certification and meets the IEC 61000-4 series electromagnetic compatibility standards.

Function & Purpose

Applications & Application Areas

• Power System Protection: Used for selective protection of radial feeders in various grounding systems.
• Industrial Power Distribution: Suitable for feeder, transformer, and motor protection in factories, buildings, and energy management systems.
• Distribution Automation: As part of ABB’s distribution automation solution, integrated into smart grid monitoring systems.
• Other Applications: Can be used in scenarios requiring single, two, or three-phase overcurrent protection

ABB SPAJ140C

ABB SPAJ140C