The REF 542plus (REF542PLUS) functions as a comprehensive multi-functional feeder protection, control, and measurement unit engineered for medium-voltage distribution automation systems. This complete unit, cataloged under product ID REF 542PLUS, combines standard protection algorithms, multi-channel measurement, control logic orchestration, and localized human-machine monitoring within a single device housing. Configured specifically under the factory designation as a DOWNGRADED VERSION, this hardware revision is built to satisfy localized distribution networks requiring tailored protection schemes without unnecessary ancillary processing modules. The assembly interfaces directly with medium-voltage switchgear components, executing real-time current and voltage monitoring, programmatic interlocking, and network safety control to shield distribution feeders from electrical faults.
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Product ID | REF 542PLUS (REF542PLUS) |
| ABB Type Designation | DOWNGRADED VERSION |
| Product Name | REF542PLUS COMPLETE UNIT |
| Part Type | New |
| Country of Origin | Finland (FI) |
| Customs Tariff Number | 85364900 |
| Product Net Weight | 8 kg |
| Gross Weight | 8 kg |
| Minimum Order Quantity | 1 piece |
The enclosure must be mounted securely into a pre-cut cutout panel on a medium-voltage switchgear door or control cabinet. Ensure all mounting clamps are tightened evenly to maintain uniform sealing pressure and prevent distortion of the chassis frame.
Establish a low-impedance connection between the rear panel grounding stud and the main substation earth busbar using a heavy-gauge copper braid. Proper grounding is essential to protect the internal digital electronics from high-voltage transients and inductive switching noise common in medium-voltage environments.
Separate the low-voltage binary signaling lines and communications cables from the secondary high-current instrument transformer wiring (current transformers and voltage transformers). Route cables through dedicated metallic wireways to prevent electromagnetic interference from cross-coupling into sensitive analog sampling circuits.
Global Express Shipping
Returns & Warranty
Manufacturer: ABB
Product No.: REF542PLUS
Country of origin:Finland
Product Type: Feeder Protection and Control Units
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 8000g
Dimensions: 14.5 cm x 18 cm x 15 cm
Shipping port: Xiamen
Warranty: 12 months
The REF 542plus (REF542PLUS) functions as a comprehensive multi-functional feeder protection, control, and measurement unit engineered for medium-voltage distribution automation systems. This complete unit, cataloged under product ID REF 542PLUS, combines standard protection algorithms, multi-channel measurement, control logic orchestration, and localized human-machine monitoring within a single device housing. Configured specifically under the factory designation as a DOWNGRADED VERSION, this hardware revision is built to satisfy localized distribution networks requiring tailored protection schemes without unnecessary ancillary processing modules. The assembly interfaces directly with medium-voltage switchgear components, executing real-time current and voltage monitoring, programmatic interlocking, and network safety control to shield distribution feeders from electrical faults.
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Product ID | REF 542PLUS (REF542PLUS) |
| ABB Type Designation | DOWNGRADED VERSION |
| Product Name | REF542PLUS COMPLETE UNIT |
| Part Type | New |
| Country of Origin | Finland (FI) |
| Customs Tariff Number | 85364900 |
| Product Net Weight | 8 kg |
| Gross Weight | 8 kg |
| Minimum Order Quantity | 1 piece |
The enclosure must be mounted securely into a pre-cut cutout panel on a medium-voltage switchgear door or control cabinet. Ensure all mounting clamps are tightened evenly to maintain uniform sealing pressure and prevent distortion of the chassis frame.
Establish a low-impedance connection between the rear panel grounding stud and the main substation earth busbar using a heavy-gauge copper braid. Proper grounding is essential to protect the internal digital electronics from high-voltage transients and inductive switching noise common in medium-voltage environments.
Separate the low-voltage binary signaling lines and communications cables from the secondary high-current instrument transformer wiring (current transformers and voltage transformers). Route cables through dedicated metallic wireways to prevent electromagnetic interference from cross-coupling into sensitive analog sampling circuits.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Finland
|
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