Areva MiCom P120, Technical Manual

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Hardware/Software Version P12x/EN VC/A96
History and Compatibility
MiCOM P120/P121/P122/P123
Page 3/26
1. INTRODUCTION
HARDWARE INSTALLED
HARD 1
HARD 2 Evolutions:
- Add flash memory
HARD 3 Evolutions:
- The digital inputs can operate in AC voltage
- The watchdog output is now a change over contact
HARD 4 Evolutions:
- CPU release D incompatible with the preceding ones.
- The power supply battery box MiCOM E1 is available to ensure temporary supply to the
relay to consult or modify data.
HARD 5 Evolutions:
- CPU redesign
* new microprocessor (300MHz)
* new RAM (2Mb)
* new flash memory (20Mb) to replace BBRAM, EEPROM & front face battery
* lead free design
* Hardware watchdog
- wide range power supply (48 – 250 Vac/dc)
- wide range digital input (48 – 250 Vac or Vdc)
- ANSI compliance for dielectric withstand of trip/close contacts
SERIAL NUMBER HELP
The serial number (e.g. 0804253) informs about the date of manufacture and the version
of hardware. It printed on the front relay label. This number is read from left to right:
- 2 first number define the week (e.g. 08 is the calendar week 8).
- 2 number following define the year (e.g. 04 is the year 2004).
- 3 final is a consecutive number up to 999 to uniquely identify the relay.
E.g.: W W Y Y N N N
- W = Week 01 To 52
- Y = Year (19)94 To (20)93
- N = Product Arrang. 001 To 999