overview：
The ABB SPAJ141C-AA is a specialized overcurrent and earth-fault relay, specifically designed to provide selective short-circuit and earth-fault protection for radial feeders within solidly earthed, resistance-earthed, or impedance-earthed power systems. This ABB overcurrent relay features a compact design that integrates three-phase overcurrent units with an earth-fault unit; it is capable of monitoring current fluctuations within the power circuit in real time and promptly detecting various anomalous circuit signals.
By operating in conjunction with field-mounted current transformers, the SPAJ141C-AA overcurrent and earth-fault relay ensures the stable monitoring of both phase currents and neutral-point currents. Should an overload, short circuit, or earth fault occur within the operational circuit, the relay immediately issues a trip signal or an alarm notification, thereby effectively isolating the faulty circuit and minimizing equipment damage as well as production interruptions caused by unforeseen incidents.
Fuctions & Features:
- Integrated Protection Design: Features built-in low-set and high-set overcurrent modules, as well as low-set and high-set earth fault modules, providing comprehensive current fault protection for power feeders.
- Circuit Breaker Failure Protection: Equipped with an independent circuit breaker failure protection function; should the main circuit breaker fail to trip, a backup tripping action is initiated to effectively limit the scope of fault propagation.
- Adjustable Tripping Modes:The low-set phase overcurrent section supports two operating modes: definite time and inverse definite minimum time (IDMT); the high-set section supports both instantaneous and definite time operations to accommodate varying power grid operational protocols.
- Wide Setting Range: Offers a flexible range for parameter configuration; the overcurrent setting range covers 0.5 to 40 times the nominal current (In), while the earth fault setting range covers 0.1 to 10 times In, enabling adaptation to diverse on-site operating conditions.
- Convenient Parameter Configuration:Operators can modify internal parameters directly via the front-panel buttons and local display screen; additionally, the device supports remote reading and writing of parameters via serial ports and fiber-optic buses.
- Built-in Self-Diagnostic Function: Internal electronic components and the microprocessor undergo continuous, real-time self-monitoring, enabling the early detection of internal operational anomalies to ensure the device maintains a stable operating status.
- Robust Environmental Adaptability: Capable of operating normally across a wide temperature range of -10°C to +55°C; features a standard IP20 protection rating, making it suitable for installation environments such as indoor power distribution cabinets and industrial workshops.
- Abundant Output Ports: Equipped with two heavy-duty output relays and four signal output relays, allowing users to freely assign tripping and activation signals based on specific on-site control logic requirements.
- International Standard Certification: Certified by both CE and UL, ensuring compliance with global industrial electrical safety standards and meeting the delivery requirements for multinational projects.
Specification：
|
Parameter |
Details |
|---|---|
| Model | SPAJ141C-AA |
|
Product Category |
Overcurrent Earth and Fault Protection Relay |
| Applicable Frequency | 50Hz, 60Hz optional configuration |
| Working Supply Voltage | 100V~240V AC/DC |
| Working Temperature | -10℃ ~ +55℃ |
| Storage Temperature | -40℃ ~ +85℃ |
| Protection Level | IP20 |
| Length | 96mm |
| Width | 96mm |
| Height |
75mm |
| Weight |
0.3KG |
- Questions and Answers：
Q: Can the SPAJ141C-AA be used in conjunction with other series of ABB protection devices?
A:This product features standardized industry-standard interfaces and mounting dimensions, ensuring perfect compatibility with ABB current transformers, switchgear, and other ancillary power equipment.
Q: How does the SPAJ141C-AA differ from other models within the same series?
A: The SPAJ141C-AA primarily focuses on providing core protection functions for basic overcurrent and earth faults; other derivative models within this series, however, build upon this foundation by incorporating additional auxiliary alarm and remote monitoring capabilities.
Q: What is the brand?
A: ABB
Q: What is the warranty period?
A: 1 year.
Q: What is the delivery time?
A: In stock
Q: What is the payment method?
A: T/T
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