IG-267-EN versión 01; 07/04/2017
59
General Instructions
ekor
.rpa
Protection, metering and control models
8.1.3.
ekor
.rpa-100-v
/
ekor
.rpa-100-p
The
ekor
.rpa-110 and
ekor
.rpa-120 models include two
types of unit: v type for protection cubicles with circuit-
breaker, or p type for protection with fuses. Four different
systems are therefore defined:
•
ekor
.rpa-110-v
•
ekor
.rpa-110-p
•
ekor
.rpa-120-v
•
ekor
.rpa-120-p
The main applications v
type units (circuit-breaker)
are
used in are: general protection of lines, private installations,
transformers, capacitor stacks, etc. The unit has inputs and
outputs for switch monitoring and control.
In the case of p
type units (switch with fuses)
, the
electronic unit performs all the protection functions except
for the high value polyphase short-circuits that occur in the
transformer’s primary. It has inputs and outputs for switch
monitoring and control.
ekor
.rpa-100
Protection, metering and control units
Model
ekor
.rpa-110
ekor
.rpa-120
Type
v
p
v
p
General
Phase current sensors
3
3
3
3
Earth current pickup (with zero-sequence current transformer)
Op
Op
Op
Op
Voltage sensors
3
3
3
3
Power supply 24 - 120 V
DC
± 10 %/40 - 90 V
AC
± 20 %
Yes
Yes
Yes
Yes
Metering 50/60 Hz
Yes
Yes
Yes
Yes
Time synchronisation (according to time zone)
Yes
Yes
Yes
Yes
Timer curve types: IEC and ANSI/IEEE
Yes
Yes
Yes
Yes
Current protection
Phase overcurrent (50-51(1)-51(2))
Yes
Yes
Yes
Yes
Earth leakage overcurrent (50 N-51(1) N -51(2) N)
Yes
Yes
Yes
Yes
Earth leakage ultrasensitive (50 Ns-51(1) Ns-51(2) Ns)
Yes
Yes
Yes
Yes
Block by 2nd harmonic
Yes
Yes
Yes
Yes
Phase directional (67)
No
No
Yes
Yes
Neutral directional (67N) and sensitive neutral (67Ns)
No
No
Yes
Yes
Broken conductor detection (46FA)
No
No
Yes
Yes
Coordination with fuses
No
Yes
No
Yes
Voltage protection
Overvoltage (59) and undervoltage (27)
No
No
Yes
Yes
Residual overvoltage (59N)
No
No
Yes
Yes
Temperature protection
Thermal image (49)
No
No
Yes
Yes
Detection, automation and control
Detection of voltage presence/absence
Yes
Yes
Yes
Yes
Detection of energised/de-energised line
Op
Op
Op
Op
Switch command and control
Yes
Yes
Yes
Yes
Recloser
Yes
No
Yes
No
Switch monitoring and control by temperature
No
No
Op
Op
Other automations
No
No
Op
Op
9 inputs/4 outputs
Yes
Yes
Yes
Yes
Indications
Indication of reason for tripping
Yes
Yes
Yes
Yes
Indication of reason for error
Yes
Yes
Yes
Yes
Meterings
Current
Yes
Yes
Yes
Yes
Voltage
No
No
Yes
Yes
Voltage and current phasor angles
No
No
Yes
Yes
Continued on next page
Summary of Contents for ekor.rpa Series
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