SPAU330 C1-AA ABB Earth-Fault Relay

SPAU330 C1-AA ABB SPACOM Earth-Fault and Overcurrent Relay

SPAU330 C1-AA ABB SPACOM Earth-Fault and Overcurrent Relay

Availability: 10 left in stock

ABB SPAU330 C1-AA SPACOM Series Earth-Fault and Overcurrent Relay The ABB SPAU330 C1-AA, also cataloged as the SPAU330 C1-AA Earth-Fault...

SKU: SPAU330 C1-AA

Manufacturer: ABB
Product No.: SPAU330 C1-AA
Product Type: Protective Relays
Product Origin: Switzerland
Payment:T/T, Western Union
Weight: 2000g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

ABB SPAU330 C1-AA SPACOM Series Earth-Fault and Overcurrent Relay

The ABB SPAU330 C1-AA, also cataloged as the SPAU330 C1-AA Earth-Fault and Overcurrent Relay, operates as a dedicated hardware component for directional/non-directional earth-fault detection and overcurrent protection within 6-36 kV distribution networks. This numerical microprocessor-based hardware element samples primary currents and voltages through instrument transformers to execute deterministic trip decisions during power grid abnormalities.

Hardware Specifications

Parameter	Specification
Model	SPAU330 C1-AA
Brand	ABB
Origin	Finland / Sweden
Weight	2 kg net
Dimensions	220 mm x 150 mm x 60 mm
Operating Temp	-10 to +55 deg C
Power Consumption	Supported via auxiliary supply: 80-265 V DC/AC
ABB Type Designation	Voltage / Earth-Fault Relay
Series Platform	SPACOM Family
System Frequency	50 Hz (AA configuration)
Primary Functions	Directional/Non-directional Earth-fault, Overcurrent, and Voltage monitoring
Inputs	Current Transformer (CT) and Voltage Transformer (VT) inputs
Outputs	Heavy-duty relay contacts for trip and alarm signaling
Communication Interface	RS-485 via SPA bus protocol
Protection Rating	IP20 (Cabinet mounted)

Industrial Control & Drive Backplane Characteristics

The computational architecture utilizes dedicated internal pathways to transmit digitized fault parameters, interacting with the substation bus through integrated backplane bus communication velocity licences. To maintain stability across high-density protection grids, the module runs continuous algorithmic checks over Profinet / EtherNet/IP deterministic networks via external gateways or natively using the RS-485 SPA bus layer. The microprocessor maintains total firmware flash compatibility with existing SPACOM legacy networks, ensuring that high-speed disturbance logging and phase vector measurements are routed without packet drop or execution delays.

Frequently Asked Questions

Q: Can the SPAU330 C1-AA relay module be hot-swapped while the distribution feeder is carrying load?

A: No, hot-swapping the internal protection assembly while the primary current transformer (CT) secondary circuits are live is strictly prohibited. Unplugging the hardware under load will open-circuit the CT secondaries, generating high voltages that can destroy the terminal block and present immediate physical risk to personnel.

Q: How does the "AA" suffix configuration define the system frequency and auxiliary power range?

A: The "AA" hardware variant specifies that the internal filtering and numerical processing algorithms are hardcoded and calibrated for 50 Hz power networks. Additionally, this designation equips the unit with a wide-range internal power supply board capable of running on any input from 80 to 265 V DC or AC.

Q: What action does the relay take if the continuous internal self-diagnostics detect an error?

A: Upon detecting a hardware or memory fault during self-testing, the internal Internal Relay Fault (IRF) watchdog contact changes state. This action blocks all automated trip outputs to prevent false tripping and flashes a dedicated fault code on the front-panel display.

Field Installation Guidelines

Mount the relay unit securely into the instrument panel cutout or designated cabinet rack slot, tightening all mounting hardware to prevent displacement from switchgear operating shocks. Wire the secondary sides of the external Current Transformers (CT) and Voltage Transformers (VT) to the rear screw terminal strips using a minimum wire size of 2.5 mm2. Install all RS-485 communication lines using twisted, shielded instrumentation cables. Terminate the shield drain wires exclusively at the central low-impedance substation ground bar inside the cabinet enclosure to neutralize induced electromagnetic fields and eliminate circulating ground loops. Ensure that the cabinet ventilation matches the -10 to +55 deg C thermal threshold under continuous operational load.

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Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

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We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.