IGS-NT Safety Manual 1.0 rev.8
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IGS-NT-1.0 – Safety Manual / ©ComAp – March 2014 / IGS-NT-1.0-SafetyManual rev.8.pdf
ComAp, a s.
Kundratka 2359/17
180 00 Praha 8
Czech Republic
ISO 9001 Certified
Co
mAp s.r.o.
Qu
ality Manageme
nt
Tel.: +420 246012111
Fax: +420 2 66316647
E-mail: [email protected]
Internet: http://www.comap.cz
IGS-NT Safety manual
This document shall provide the detail description for customers of ComAp paralleling controllers, namely for
IGS-NT line members (controllers named in the following bullets) how to connect the controller and coherent
systems, to comply with VDE-AR-N-4105 requirements, namely with the requirement for Single fault
tolerance.
This manual is dedicated for following ComAp controllers:
·
IG-NT-BB
·
IG-NTC-BB
·
IS-NT-BB
·
IS-NTC-BB
·
IM-NT-BB
·
IM-NTC-BB
·
AIO-NT-BB
·
AIO-NTC-BB
and all these controllers are generally named as a “controller” in this document.
Hint:
On all the schemes shown below, it is assumed, that:
·
All binary outputs are activated as low side switches, it means in active state the BO provides minus
pole of the controller power supply.
·
All binary inputs are active when minus pole of the controller power supply is applied to input
terminal.
In case the logic on particular installation (site) is opposite (e.g. binary outputs are high side switch type) the
corresponding change has to be taken into account in the scheme as well (interchange between L- and L+
terminals). Due to better readability of the schemes this change is not shown.
In the text below there is referred about circuit breakers, CB. These CB are meant as the 2 redundant CB
which the norm VDE-AR-N 4105 requires. Based on the target application – SPI, SPtM or MGCB the
redundant breakers are either GCB1 and GCB2 in case of SPI and SPtM application, or MGCB1 and
MGCB2 in case of MGCB application. Due to this variability the redundant breakers are referred as CB and
based on the target application this means either GCB or MGCB.
Single Fault Tolerance requirement
VDE-AR-N 4105:2011-08 requests in point A.6 that central NS protection, integrated interface switch as well
as the trigger circuit consisting of integrated NS protection and integrated interface switch shall meet the
requirements for single-fault tolerance.
This requirement can not be achieved with any single controller mentioned above therefore 2 independent
devices (or units) have to be used instead of just one controller.
There are following possibilities:
1. ComAp controller (mentioned above) plus MainsPro controller (independent mains protection unit).
