Xiamen Changxuyuan Trading Co., Ltd
| Payment Terms | T/T,paypal,alipay |
| Supply Ability | 99+ |
| Delivery Time | 3-5 days |
| Packaging Details | Brand new and original |
| Shipping Weight | 11.2 KG |
| Packing Size | 12.3 x 18.6 x 9.5 cm |
| Condition | Brand new and original |
| Warranty | One year |
| Trade Terms: | EXW, DAP, FOB, CIF |
| Express Delivery | DHL, FedEx, UPS |
| Brand Name | ABB |
| Model Number | SPAU 140 C |
| Certification | COO & COC |
| Place of Origin | Finland |
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Product Specification
| Payment Terms | T/T,paypal,alipay | Supply Ability | 99+ |
| Delivery Time | 3-5 days | Packaging Details | Brand new and original |
| Shipping Weight | 11.2 KG | Packing Size | 12.3 x 18.6 x 9.5 cm |
| Condition | Brand new and original | Warranty | One year |
| Trade Terms: | EXW, DAP, FOB, CIF | Express Delivery | DHL, FedEx, UPS |
| Brand Name | ABB | Model Number | SPAU 140 C |
| Certification | COO & COC | Place of Origin | Finland |
| High Light | ABB synchro-check relay 250V AC/DC ，SPAU 140 C voltage-check relay ，ABB spare parts relay 50Hz | ||
SPAU 140 C ABB Synchro-check Relay Voltage-check Relay 50Hz 250V Ac/dc
I. Key Functions
1. Synchronization Check – When both sides of the network are energized, the circuit breaker can only be closed if the voltage difference (ΔU), frequency difference (Δf), and phase angle difference (Δφ) all fall within the preset limits.
2. Voltage Check – When one side is energized and the other is not, this function verifies that the power flow direction is correct and the dead-time requirement is met, preventing load-side energization.
3. Dual Circuit Breaker Scenario – With two completely independent stages (Stage 1/Stage 2) built in, it can monitor the closing conditions of two circuit breakers simultaneously, suitable for applications such as dual busbar systems, ring main units, or generator-transformer unit configurations.
II. Key Parameter Ranges
- Voltage difference ΔU: 2%…40% × Un (1% step)
- Frequency difference Δf: 0.02…0.50 Hz (0.01 Hz step)
- Phase angle difference Δφ: 5°…50° (1° step)
- Slip cycle measurement threshold: >0.15 × Un for calculating Δf/Δφ
- Deadband time (Voltage-check tVC): 0.1…20 s
- Circuit breaker tripping time compensation tCB: 0…500 ms
- Rated voltage input: 100 V or 110 V (50/60 Hz)
- Auxiliary power supply: 80…265 V AC/DC or 18…80 V DC (Optional modules: SPFU 240R4 / SPFU 48R4)
III. Hardware and Communication Interface
- 19" 6U rack-mount enclosure, IP54 front panel; Weight ≈ 3 kg
- 8 output relay contacts: 2× heavy-duty (CB closing pulse), 6× signal (start, trip, device fault)
- Continuous hardware self-test: Internal fault <120 ms triggers IRF signal and locks output
- Rear fiber optic SPA-BUS serial port (standard), compatible with ABB LonWorks/SCADA via SPA-ZC21/17 module; supports remote reading of real-time ΔU, Δf, Δφ values and event logging
IV. Typical Industry Applications
- 6 kV power plant auxiliary busbar switching/tie-breaker
- Hydro power plant generator output circuit breaker (GCB) synchronization
- 220 kV substation double busbar switching operations
- Oil platform ring main unit (DR) switchgear synchronization
- SPACOM upgrade – SPAU 140 C and SPAU 341 C are directly interchangeable on the rail; only parameter settings need to be updated
Product details pictures
Related products
| SPAU 110 C | SPAU 121 C |
| SPAU 140 C | SPAU 130 C |
| SPAU 320 C | SPAU 300 C |
| SPAU 341 C | SPAU 330 C |
| SPAJ 140 C | SPAF 140 C |
| SPAJ 142 C | SPAJ 141 C |
| SPAJ 160 C | SPAJ 144 C |
| SPAC 315 C | SPAM 150 C |
| SPAC 320 C | SPAC 317 C |
| SPAD 346 C | SPAS 120 C |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Exporter,Trading Company,Seller,Other
Year Established:
2020
Total Annual:
3000000+-4000000+
Employee Number:
80~120+
Ecer Certification：
Verified Supplier
We are a global trading company specializing in PLC automation and industrial controls. Xiamen Changxuyuan Trading Co., Ltd. is a leading global online wholesale supplier, offering a wide selection of new and discontinued products. We are committed to providing a wide range of high-quality produc... We are a global trading company specializing in PLC automation and industrial controls. Xiamen Changxuyuan Trading Co., Ltd. is a leading global online wholesale supplier, offering a wide selection of new and discontinued products. We are committed to providing a wide range of high-quality produc...
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