Alstom MiCOM P546 - 3. PRODUCT SCOPE; 3.1 Functional overview

P54x/EN IT/La4 Introduction
(IT) 1-6 MiCOM P543, P544, P545 & P546
IT
3. PRODUCT SCOPE
The P54x is designed for all overhead line and cable applications, as it interfaces readily with
the longitudinal (end-end) communications channel between line terminals.
P54x includes a high-speed current differential unit protection with optional high performance
sub cycle distance protection including phase segregated aided directional earth fault DEF.
Four P54x models are offered:
The distance option is independent of the hardware configuration and is specified by means
of the software number (refer to the ordering options in section 3.2).
P543 and P5
45:
Features included only in the P543 and P545 models are: Differential for Plain and
Transformer Feeders.
P543 in (60TE /12”) with 16 inputs and 14 standard outputs (or 7 standard and 4 high break
outputs option).
P545 in (80TE /19”) with 24 inputs and 32 standard outputs (or 16 standard and 8 high break
outputs option).
P544 and P546:
Features included only in the P544 and P546 models are Differential for Mesh Corner.
P544 in (60TE /12”) with 16 inputs and 14 standard outputs (or 7 standard and 4 high break.
outputs option)
P546 in (80TE /19”) with 24 inputs and 32 standard outputs (or 16 standard and 8 high break
outputs, or 8 standard and 12 high break outputs options).
3.1 Functional overview
The
P54x distance relay contains a wide variety of protection functions. The protection
features are summarized below:
Models
ANSI FEATURE P543 P544 P545 P546
Optocoupled digital inputs 16 16 24 24
Standard relay output contacts 14 14 32 32
Standard and high break output contacts (11) (11) (24)
(24)
(20)
Dual rated 1A and 5A CT inputs
   
Tripping Mode - single or three pole
   
ABC and ACB phase rotation
   
Multiple password access control levels
   
87 Phase segregated current differential
   
2 and 3 terminal lines/cables
   
Feeders with in-zone transformers
 
Control of dual circuit breakers
   
Suitable for use with SDH/SONET
networks (using P594)
   
InterMiCOM
64
teleprotection for direct
relay-relay communication
   
21P/21G Distance zones, full-scheme protection (5) (5) (5) (5)