Description

GE MiCOM p542 relay

The GE MiCOM p542 relay provides high-speed current differential unit protection. They are designed for overhead line and cable applications, interfacing readily with the longitudinal (end-end) communications channel between line terminals. The interface options support direct fiber-optic or multiplexed digital links.

Optimum selectivity is assured, as the scheme measures the currents entering and leaving the protected plant item. Instantaneous tripping results in an internal fault, with stability for any out-of-zone fault. Tripping uses a proven characteristic comparing differential current with through current, for ease of testing. Phase differential elements of this type offer consistent detection of solid and resistive faults, with optimum faulted phase selection, tripping, and indication.

Key Features Of GE MiCOM p542 relay:

• Differential protection adaptable to different substation topologies: e.g. 2 or 3 terminal lines/cables, in-zone transformers, 3 pole tripping
• An ideal economical solution for distribution applications
• Small case width eases retrofitting tasks

Here are a few main characteristics of the GE MiCOM P542 relays:

• Choice of communication protocols (IEC 60870-5-103, Modbus & Courier)
• Time synchronization via RS485, IRIG-B (modulated/unmodulated), or Opto inputs
• Harsh environment coating is standard for all MiCOM relay to protect against corrosive gases such as H₂S or SO₂
• Inter MiCOM for transmitting 8 digital signals through teleprotection communication links
• 4 independent setting groups

Optimum selectivity is assured, as the scheme measures the currents entering and leaving the protected plant item. Instantaneous tripping results in an internal fault, with stability for any out-of-zone fault. Tripping uses a proven characteristic comparing differential current with through current, for ease of testing. Phase differential elements of this type offer consistent detection of solid and resistive faults, with optimum faulted phase selection, tripping, and indication. The GE MiCOM p541 relay provides high-speed current differential unit protection. GE Relays are designed for overhead line and cable applications, interfacing readily with the longitudinal (end-end) communications channel between line terminals. The interface options support direct fiber-optic or multiplexed digital links.