Product Core Brief
- Model: RET650
- Brand: ABB
- Series: Relion 650 Series (Version 1.1 / 1.2 / 2.1)
- Core Function: Implements specialized, high-speed transformer differential protection, automatic voltage regulation (AVR), and control for two-winding power transformers.
- Type: Transformer Protection and Control Terminal
- Key Specs: Pre-configured standard solutions, 1/2-rack 19-inch form factor, native IEC 61850 design, options for high-voltage or low-voltage auxiliary power cards.
- Condition: New Original (New Surplus) — not refurbished.
Product Introduction
Looking for a turnkey, mid-range numerical solution for power transformer assets? The ABB RET650 functions as a specialized protection and management relay within the Relion 650 family. It is engineered to safeguard distribution and small-scale utility transformers against winding short-circuits, phase faults, and localized thermal overloads. This unit bridges the gap between basic compact relays and modular flagship systems by offering pre-configured, factory-tested protection templates.
Deploying this specific controller stabilizes your electrical bus during severe through-fault conditions by using an optimized numerical restraint algorithm that halts false tripping within 20 ms. Frankly, because it arrives with the internal current and voltage channel mappings already linked to standard templates, your team bypasses the complex, ground-up logic creation required by larger platforms. This engineering shortcuts overall panel configuration and testing hours by roughly 40%.
Pricing Note: The listed price serves as a reference point only. Actual project pricing fluctuates based on current component market conditions and procurement volumes. Please contact our sales engineering desk to request a binding commercial quote.
Installation & Configuration Guide
Phase — Pre-Installation (est. 10 min)
Isolate all primary medium-voltage and high-voltage circuit breakers feeding the transformer cell enclosure. Lock out and tag out the primary DC auxiliary control loops. Before swinging open the panel mounting door, use your digital multimeter to verify that the terminal block rails are completely de-energized. Wait 5 minutes for the internal power supply capacitors to drop their electrical charges safely.
Prepare your toolkit: an insulated terminal screwdriver set, a static-dissipative wrist strap, and a Fluke 115 multimeter. Export the existing application parameters or standard .pcmp project file using your laptop running PCM600 software. Photograph the rear terminal block layouts, serial communication paths, and case ground paths.
