Siemens SIPROTEC 7SJ62 Instruction Manual

Functions
6-64 7SJ62 Manual
C53000-G1140-C121-1
Figure 6-30 Logic Diagram for Dynamic Cold Load Pickup Feature
6.4.2 Programming Settings
General Dynamic cold load Pickup feature can only be enabled if address &ROGORDG
3LFNXS was set to (QDEOHG during configuration of protective functions. If the func-
tion is not required, address  should be set to 'LVDEOHG .
Time Delays There are no specific procedures on how to set the time delays at addresses  &%
2SHQ7LPH,  $FWLYH7LPH and  6WRS7LPH. These time delays must be
based on the specific loading characteristics of the equipment being protected, and
should be selected to allow the brief overloads associated with dynamic cold load con-
ditions.
 $FWLYH7LPH
Circuit-
Breaker
Closed
 &%2SHQ7LPH
 %NU&ORVHG,0,1
I
a
, I
b
, I
c
1R&XUUHQW
%UHDNHU&RQWDFW
“1“
 6WDUW&RQGLWLRQ
&
S Q
R
>BLK CLP stpTim
or
>52-a
>52-b
or
&
or
2))
21
“1“
 &2/'/2$'3,&.83
> BLOCK CLP
CLP running
Measurement/Logic
CLP BLOCKED
CLP OFF
&
or
Ι<
Max. of
T0
&
Dynamic Pickup
T0
 6WRS7LPH
T0
Dyn Set. Activated
52a Configured
52b Configured
or
&
Normal Pickup
F# 1731
F# 4601
F# 4602
F# 1730 F# 1995
F# 1996
F# 1994
or
Exceeding one of the dynamic cold pick-up thresholds of
the directional or non-directional overcurrent elements
(Address blocks 18 to 21)
Exceeding one of the „normal“ pick-up thresholds of the di-
rectional or non-directional overcurrent elements
Processing of the
cold load pick-up
settings in the overcurrent
elements
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Siemens SIPROTEC 7SJ62 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SJ62
Category	Relays
Language	English