Product Core Brief
- Model: RET615F
- Brand: ABB
- Series: Relion 615 Series
- Core Function: Provides dedicated transformer differential protection, voltage management, and localized monitoring for two-winding power transformers.
- Type: Transformer Protection and Control Relay
- Key Specs: Supports IEC 61850 Edition 2, incorporates standard functional configuration F (with dedicated voltage control and tap-changer logic), operates on a universal 48–250 V DC / 100–240 V AC power card.
- Condition: New Original (New Surplus) — not refurbished.
Product Introduction
In search of an optimized numerical solution for critical medium-voltage transformer protection? The ABB RET615F functions as a specialized transformer management relay within the Relion product family, safeguarding distribution transformers against internal winding short-circuits, phase faults, and thermal overloads. This device mounts directly to your switchgear cell face, wiring directly to standard CT and VT secondary circuits.
Deploying this specific controller stabilizes electrical operations during heavy through-fault conditions by using an advanced numerical restraint algorithm that halts false tripping within 10 ms. Honestly, the integrated Configuration F framework provides a pre-engineered functional block layout tailored for automated tap-changer voltage regulation. That design choice minimizes external control logic components, slicing panel assembly costs by up to 25% during infrastructure upgrades.







