AEG ME09 Installation, Operation And Maintenance Manual page 48

14
2.8
1
1
Breaker 1
ZSIN + ZSIN -
2.2.4 (ZSI)
Mpro N
ZSI (ST)
(ZSI)
+24VDC
4
TIM --TIM1--
+24VDC
ZSI
/ GF ZSI
ZSI
2.2-06
INTRO BREAKER
TRIP UNIT
6.1
2
2
Breaker 2
Downstream
ZSO + ZSO -
ZSO + ZSO -
Breaker 4
(ZSI)
(I) (GF)
AEG
ST ZSI
ZSI
LOCKS ACCESSORIES
One of fourteen xed me bands can be selected. The xed
delay bands are listed in Table 2.8. The bands and slopes are
depicted as Time Current Diagram in appendix 6.1 of this
Applica on manual.
3
3
Breaker 3
Downstream
ZSO + ZSO -
ZSO + ZSO -
Downstream
Breaker 5
2.2.4 ZONE SELECT INTERLOCK (ZSI)
The Mpro N type Trip Unit can op onally be equipped with a
system that allows full selec vity independent of the chosen
breaker se ngs. (ZSI)
Zone-selec ve interlocking coordinates breakers so that the
downstream breaker is allowed the rst opportunity to clear a
fault or overload event. ZSI interlocks & coordinates reac ons to
a fault on the short- me (ST), instantaneous (I), and
ground faults (GF) devices.
The Zone Select Interlock (ZSI) func on operates with a group of
series-connected breakers and can only be used when a +24VDC
auxiliary power supply is available.
In cases when more than 4 outgoing breakers need to be
coordinated with one or more mains or incoming breakers the
use of a interconnec on device or mul plier is strongly
recommended. The AEG TIM device (Catalogue number
--TIM1--) can be used for these kind of applica ons. This device
also requires a +24VDC control voltage power supply.
When a ZSI input is received an upstream breaker will not use
the standard ST ZSI and/or GF ZSI delay band and slope se ng.
It will automa cally use a 2nd set of se ngs that the user can
individually set for use when ZSI is ON. When the ZSI input is
cancelled the breaker will revert to it's standard se ng.v
TESTS APPENDIX
Power Supply
+
2 4 V D C
-