Sepam 3-winding differential protection

Range of digital protection relays, ready-to-use, providing all the functions required by an application:

• complete protection against internal transformer faults
• restricted earth fault protection included
• simple implementation due to the use of neural networks
• metering
• alarms and indication
• control monitoring and diagnosis
• communication

Two applications:
D32:three-winding differential protection for public and industrial distribution network.
D31: three-winding differential protection for HV/MV substations.

Protect your power system with full peace of mind using Sepam protection relays.

• 20 years of experience in digital relays
• A consistent range of relays organised according to applications

Protection of a three-ended zone which includes a transformer, an auto-transformer or a generator-transformer unit.