ComAp InteliMains NT IM-NT, Справочное руководство

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InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf,
©ComAp – April 2015
100
Ld shed delay
Ld shed delay
Ld shed delay
BO LdShed stage 1
BO LdShed stage 2
BO LdShed stage 3
Ld shed level
Mai
n
s i
mpo
rt
o
r
ge
n
-set
s power
Time
Ld recon delay
Ld recon delay
Ld recon delay
BO LdShed stage 1
BO LdShed stage 2
BO LdShed stage 3
Ld recon level
Time
Mai
n
s i
mpo
rt
o
r
ge
n
-set
s power
Ld recon delay
Ld recon delay
Ld recon delay
BO LdShed stage 1
BO LdShed stage 2
BO LdShed stage 3
Ld recon level
Mai
n
s i
mpo
rt
o
r
ge
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-set
s power
Time
BI ManualLdRecon
Figure: Examples of load shedding and load reconnection (load shed, load recon, manual load recon)
7.6.7 Load shedding based on frequency
Load shedding is a function that automatically disconnects and reconnects various loads depending
on several user defined parameters. The load shedding based on frequency is activated by setting the
setpoint
Ld shed mode to FREQ ONLY.
Important setpoints : all setpoints in group Load shedding
The load shedding function is active in all controller modes except OFF. Load shedding works based
on Mains frequency or Bus frequency based on setting
LdShedBase on (MAINS IMPORT is Mains
frequency, GEN-SETS means Bus frequency).
Load shedding has three steps and each step is linked with its own Load shed binary output
(L
D
S
HED STAGE X
). There are three load shed levels and delays for all three steps as well as recon
levels and delays (setpoints in Load shedding group Ld shed f lvl1-3, Ld shedDelay1-3,
LdRecon f lvl1-3, Ld reconDelay1-3 ). Load shed can only move from one step to the next, e.g.
“No
LoadShed
” to “LdShed stage 1” to “LdShed stage 2” to “LdShed stage 3” and vice versa.
If manual reconnection of the load is desired, the Load shedding: AutoLd recon setpoint needs to be
disabled (DISABLED) and the M
ANUAL
L
D
R
ECON
binary input needs to be configured.