Numerical Protection Relay

Model Number

PDP-T100

Description

The PDP-T100 has several function modules for transformer protection. The protectionfunctions includes restrained differential, unrestrained differential, and ground overvoltage. Inaddition, it has protection blocking functions such as harmonic restraint and cold load restraint.The measuring and recorder functions make the relay operation and disturbance analysis veryeasy.Two serial communication ports provides the way to the system integration.

Features

• Numerical differential protection for two- or three-winding transformers
• No interposing CT's
• Current compensation of ratio and phase
• Configurable contact inputs and outputs to provide trip and/or indication of external protection features (Buchholz, temperature, etc.)
• Fast high overcurrent stage in differential protection
• Ground overvoltage protection
• Overexcitation and/or inrush blockingLogic editing using Easy
• LogicEvents and oscillograph recording in non-volatile memory
• Easy operation and maintenance, record view/analysis using maintenance tool
• Metering functions
• Modular hardware units
• Continuous self-diagnosis
• Fully numerical processing
• Menu-driven user interface program
• 2 serial interfaces
  - Front RS-232 interface for local connection of a notebook
  - Rear RS-485 interface for remote communication
• Available for panel mounting
• Easy Draw-out structure for maintenance