Transformer Protection Relay PST640

Description

The PST640 IED (Intelligent Electronic Device) is designed for the protection, control, measurement, and supervision of utility distribution substations and industrial power systems transformers.

Key Features

• Main and backup protection for transformer applications
• Transformer differential, instantaneous differential, and zero-sequence differential protection
• HV and LV current, voltage protection, and switch-onto-fault protection
• External protection