What is the Max Torque Angle for 32R protection for a MiCOM P343

Issue

User needs to determine whether a Max Torque Angle setting exists for the 32R (reverse power) protection element in the MiCOM P343 relay.

Product

MiCOM P343

Environment

Relay protection settings and configuration

Cause

Users may expect a directional protection element (such as 32R) to include a Max Torque Angle setting, as is common in other protection functions. This leads to confusion

when such a setting is not found in the relay configuration.

Resolution

There is no Max Torque Angle setting for the 32R (reverse power) protection element in the MiCOM P343 relay.

• The 32R function operates by measuring three-phase power using the calculation defined in the relay’s operation principles
• Directional determination is based on power flow direction, not angular relationships
• The relay only distinguishes between:
• Forward power flow
• Reverse power flow

Therefore, no torque angle adjustment is required or available for this function.

For detailed information on the operating principles, refer to the MiCOM P343 technical manual, which explains the power calculation and directional logic used by the relay.

Released for: Schneider Electric Canada