G
AMATRONIC
E
LECTRONIC
I
NDUSTRIES
L
TD
.
MegaV2 250 Installation Guide, Release 2.2
27
2.
I
NSERTING AND REMOVING POWER MODULES
This chapter discusses the physical insertion and addition of modules to the system, the physical
removal of power modules from the system, and the related changes to the system configuration.
There are four basic operations that can be performed in this respect:
•
First-time insertion of modules at time of system installation.
•
Replacement of a module in an installed system.
•
Addition of a module to an installed system.
•
Removal of a module from an installed system.
Instructions for each type of operation are given below.
T
HE POWER MODULES ARE HEAVY
!
T
HE INSERTION AND REMOVAL
OF POWER MODULES REQUIRES A TWO
-
PERSON TEAM
!
Figure 25: Moving a power module requires two persons
2.1
Safety considerations
There are general principles of safety that apply to the insertion and removal of power modules.
These principles also reduce the chances of unplanned electrical disturbance to the loads.
1
.
The ideal situation is where the
MegaV2 250
can be turned off before performing the
insertion or removal of a power module.
2
.
Where it is very inconvenient to turn off the
MegaV2 250
, the next best procedure is to turn
off all loads or disconnect them from the
MegaV2 250
while the insertion or removal of the
module is in process.
3
Where it is not possible to disconnect or turn off the loads, the next best procedure is to
perform the insertion or removal of a module with the system in bypass mode.
4
.
If none of the above situations can be obtained, the insertion or removal of modules can
still be safely accomplished.
