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1-2
Introduction
Main Relay Features (cont.)
857-UM001A-EN-P – July 2009
•
Recording of events and fault values into an event register from
which the data can be read via a keypad and a local HMI or by
means of a PC based configuration software
•
All settings, events and indications are in non-volatile memory.
•
Easy configuration, parameterization and reading of information
via local HMI, or with a SetPointPS user interface
•
Easy connection to automation systems via versatile serial
connection and several available communication protocols
•
Built-in, self-regulating ac/dc converter for auxiliary power supply
from any source within the range from 40 to 265 VDC or VAC.
•
Built-in disturbance recorder for evaluating all the analogue and
digital signals
The comprehensive protection functions of the relay make it ideal for
utility, industrial, marine and off-shore power distribution
applications. The relay features the following protection functions.
Table 1.1 – List of Protection Functions
IEEE/
IEC symbol
ANSI code
50/51
3I>, 3I>>, 3I>>>
I
>, I
>>,
dir
dir
67
I
>>>, I
>>>>
dir
dir
46R
I
/I
>
2
1
46
I
>
2
I
>>
2
47
48
I
>
st
66
N>
37
I<
67N
I
>, I
>>
0 ϕ
0 ϕ
I
>, I
>>, I
>>>,
0
0
0
50N/51N
I
>>>>
0
I
0T
67NT
59N
U
>, U
>>
0
0
49
T>
59
U>, U>>, U>>>
27
U<, U<<, U<<<
P<, P<<
32
f><, f>><<
81H/81L
Function name
Overcurrent protection
Directional overcurrent protection
Broken conductor protection
Current unbalance protection
Phase reversal / incorrect phase
sequence protection
Stall protection
Frequent start protection
Undercurrent protection
Directional earth fault protection
Earth fault protection
Intermittent transient earth fault
protection
Capacitor bank unbalance
protection
Residual voltage protection
Thermal overload protection
Overvoltage protection
Undervoltage protection
Reverse and underpower
protection
Overfrequency and
underfrequency protection
Note
Only available
when application
mode is motor
protection
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