MiCOM P59x range features several products designed for substation integration. Initially designed for Current Differential schemes, these units have a high degree of accuracy and high speed operation. They are separated into 3 categories:
MiCOM P591 and MiCOM P593 Units are stand alone fibre optic to electrical communications interface units that allow the MiCOM P54x and MiCOM P52x Current Differential Relays to be connected to remote pulse code modulation (PCM) multiplexing equipment, using 64 kbit/sec data channels conforming to ITU-T recommendations G.703 or X.21.
MiCOM P595 is an EIA(RS)485 to pilot wire interface for relay connection to unconditioned twisted pair pilots. It provides secure communications on unconditioned twisted pair pilot wires for use with MiCOM P52x Current Differential Relays. The interfacing device accepts EIA(RS)485 from the P521 and uses an internal modem to drive a 4-wire signalling link, ensuring fast operation of the differential protection.
- 4 x 1 PPS fibre optic outputs
- Synchronizing of P54x sampling, or
- 1 x Modulated IRIG-B output
- 2 x Un-modulated IRIG-B outputs
- 4 x Output Contacts - each 1 PPM/1 PPH pulse outputs or alarm contacts
- Front panel User Interface, as per MiCOM Px20 relays
- Watchdog outputs
- Software update port
MiCOM P59x units are designed to work in demanding and harsh environmental conditions and for fast operating current differential protection applications.
MiCOM P594 offers time synchronisation for any substation application, it offers very high accuracy for current differential applications as well as IRIG-B (Modulated and Unmodulated), pulsed contacts and pulsed fibre optic outputs. It is suitable for many different substation synchronisation tasks and is built on reliable hardware, used on MiCOM Px20 protection relay range.