ABB SPAJ140C is a combination overcurrent and ground fault relay, belonging to the ABB SPACOM series of distribution automation products, designed specifically for power system protection. The following are its core functions and technical features:
Core functions
Overcurrent protection
Three phase low setting overcurrent protection: supports definite time or inverse time (IDMT) characteristics, and can choose six types of curves including normal, strong inverse time, and super strong inverse time.
Three phase high fixed value overcurrent protection: provides instantaneous or timed action, suitable for rapid response to short-circuit faults.
Earth fault protection
Low fixed value grounding fault protection: supports definite time or inverse time limit (IDMT) characteristics, suitable for neutral point ungrounded or resistance/impedance grounded systems.
High fixed value ground fault protection: provides instantaneous or timed action, covering different ground fault scenarios.
Circuit breaker failure protection
Built in circuit breaker failure protection function, detects circuit breaker refusal to move and triggers backup protection mechanism.
Flexible output configuration
Equipped with 2 heavy-duty relays and 4 signal output relays, supporting custom protection signal routing through output matrix.
Technical Characteristics
Localization operation and monitoring
Digital display screen: Real time display of measured values, set values, and fault record data.
Front panel buttons: support local parameter tuning and reset operations.
Communication and Expansion
Serial interface: Supports RS485 or fiber optic bus communication, with a maximum transmission distance of 1200 meters (9600bps).
Software support: Parameter configuration, fault diagnosis, and data recording can be achieved through CMT debugging software.
Self inspection and reliability
Continuous self check: Monitor the operating status of electronic components and microprocessors to ensure system stability.
Anti interference design: Passed CE certification and meets the IEC 61000-4 series electromagnetic compatibility standards.
Input and output specifications
Input current range: 1A/5A or 0.2A/1A (depending on model), supports measurement of three-phase current and zero sequence current.
Fixed value range: overcurrent protection low fixed value 0.5-5.0In, high fixed value 0.5-40In; ground fault protection low fixed value 0.1-0.8In, high fixed value 0.1-10.0In.
Application scenarios
power system protection
Radiant feeders used for direct grounding, resistance grounding, or impedance grounding systems, providing selective protection against short circuits and ground faults.
industrial power distribution
Suitable for feeder, transformer, and motor protection in scenarios such as factories, buildings, and energy management.
distribution automation
As part of ABB’s distribution automation solution, integrated into the smart grid monitoring system.
Design advantages
Compact structure: Installed with 35mm DIN rails, the size is small (132mm × 105mm × 52mm), suitable for space limited environments.
Wide temperature adaptability: The working temperature range is -40 ° C to+70 ° C, meeting the requirements of extreme weather conditions.
Modular Expansion: Compatible with other modules in the SPACOM series (such as the SPCJ 4D29 measurement module), supporting customized functionality.
Choose Shenzhen Changxin for worry-free after-sales service and high-quality products. We only cooperate with first-tier brand manufacturers in the industry. Our products are imported and comprehensive. We provide thoughtful pre-sales service, communicating multiple times with customers about product models, quality, prices, and delivery schedules to jointly confirm the solutions and address users’ concerns in advance. Business execution is in place, ensuring on-time delivery of ordered products and formulating a comprehensive delivery plan to guarantee the project schedule. We also assist users in handling acceptance procedures.
Our after-sales service is impeccable. For any problems during the warranty period, we only replace, not repair. We never shirk responsibilities or pass the buck when encountering problems. Our service hotline is available 24/7: 18150087953
SOLEMN COMMITMENT
- For all items, modules, and cards sold by our company, if any quality problems occur during normal use within the warranty period, we will provide free replacements without any excuse or delay.
- For non-discontinued materials and equipment that are out of the warranty period, we only charge the cost of relevant accessories for quality problems.
- For discontinued materials and equipment, we provide alternative models and equipment replacement process services.
- For the materials and equipment purchased by customers, we offer lifetime free system software upgrades and provide relevant technical documents for free.
- We regularly follow up on the usage of the materials purchased by customers and promptly solve any problems.
- Our company’s hotline provides 24-hour service, and we will respond to customers’ questions within 1 hour.
- For any other matters not covered, our company adheres to the attitude of “thoughtful service and full responsibility” and solves problems from the customer’s perspective in a practical way. With a serious and rigorous corporate style, we wholeheartedly serve every customer.
The company mainly imports PLC modules, programmable controllers, servo control systems and DCS spare parts, such as: ABB, AB (Rockwell), GE (General Electric), Bentley, Honeywell, Emerson, Motorola, Invensys, Westinghouse, etc. The company has established close cooperative relations with many world-renowned PLC and DCS product maintenance service providers, and can directly purchase from abroad, providing equipment and spare parts from different countries and manufacturers.
We supply directly from abroad, without middlemen, reducing the cost of use.
There is really no middleman who can make a price difference! !
If you have any defects or need to import PLC, DCS spare parts, please contact our team, we will help you find reliable and high-quality products super quickly, while shortening the delivery time to ensure that your equipment can operate normally in the right environment. On time.
Professionally provide: PLC programmable control system, distributed control system (DCS), safety instrument system (SIS), ESD system, vibration monitoring system, turbine compressor control system (CCS) and other PLC modules, various industrial control systems, system modules, CPU, IO module, DO module, AI module, DI module, network communication module, Ethernet module, motion controller, analog input module, analog output module, switch input module, switch output module, module redundancy, power supply module, relay output unit, relay input unit, processing unit.
Products are widely used in: electricity, petroleum, mine hoisting, ports, heating, gas, water supply, sewage treatment, metallurgy, papermaking, textile, chemical industry, water conservancy and other modern industrial fields!
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