Functionality - ABB REC670 Product Manual

Bay control REC670
Pre-configured
Product version: 1.1
ANSI Function description
DNP3.0 for TCP/IP and EiA-485 communication
protocol
Single command, 16 signals
Multiple command and transmit
Remote communication
Binary signal transfer
*) In order to utilize it, an appropriate optional hardware port must be ordered.

4. Functionality

Differential protection
1Ph High impedance differential
protection HZPDIF
The 1Ph High impedance differential
protection HZPDIF function can be used
when the involved CT cores have the same
turn ratio and similar magnetizing
characteristic. It utilizes an external
summation of the phases and neutral current
and a series resistor and a voltage dependent
resistor externally to the IED.
Current protection
Instantaneous phase overcurrent
protection PHPIOC
The instantaneous three phase overcurrent
function has a low transient overreach and
short tripping time to allow use as a high set
short-circuit protection function.
Four step phase overcurrent protection
OC4PTOC
The four step phase overcurrent protection
function OC4PTOC has an inverse or definite
time delay independent for each step
separately.
All IEC and ANSI time delayed characteristics
are available together with an optional user
defined time characteristic.
6
1MRK 511 192-BEN B
Single Breaker Double brekaer
(A30) (B30)
Basic Option Basic Option
(Qty/ (Qty/
Option Option
design) design)
1 - 1 -
4 - 4 -
60/10 - 60/10 -
6 - 6 -
The directional function is voltage polarized
with memory. The function can be set to be
directional or non-directional independently
for each of the steps.
A 2nd harmonic blocking can be set
individually for each step.
Instantaneous residual overcurrent
protection EFPIOC
The Instantaneous residual overcurrent
protection EFPIOC has a low transient
overreach and short tripping times to allow
the use for instantaneous earth-fault
protection, with the reach limited to less than
typical eighty percent of the line at minimum
source impedance. EFPIOC can be configured
to measure the residual current from the three-
phase current inputs or the current from a
separate current input. EFPIOC can be
blocked by activating the input BLOCK.
Four step residual overcurrent protection
EF4PTOC
The four step residual overcurrent protection
EF4PTOC has an inverse or definite time
delay independent for each step separately.
All IEC and ANSI time delayed characteristics
are available together with an optional user
defined characteristic.
The directional function is voltage polarized,
current polarized or dual polarized.
Issued: June 2010
1 1/2 breaker for
individual CB
(C30)
Basic Option
(Qty/
Option
design)
1 -
4 -
60/10 -
6 -
ABB