1
MASTERYS IP+
60-80 kVA 3/3
IT
ALIANO
ENGLISH
22
IOMMASIPXX08-GB 02
ACCESS TO CONTROLS
AND COMMUNICATION INTERFACES
5
This chapter identifi es the electromechanical switches, described below, and used for start-up, shutdown and main-
tenance bypass procedures. Access to the control area is from the front by opening the front door. The control area
also contains the communication interface connectors and the slots for the optional signalling cards. Please refer to
the relevant chapter for more details on the connection and use of the related communication interfaces/cards.
5.1 FUNCTIONS OF THE SWITCHES.
Input switch Q2.
The input switch provides the primary power supply to the UPS. In normal operating conditions it should be in
position
1
ON. The position
0
OFF will cause the batteries to discharge. In a confi guration with separate mains, the
switch only interrupts the rectifi er power supply.
Output disconnecting switch Q3.
The disconnecting switch Q3 has three positions with the following functions:
•
Position 1
ON: this is the position for normal operation of the UPS for a continuous power supply to the load;
•
Position 0
OFF: this completely isolates the UPS output by removing the voltage from the applications in any
operating condition. It is used for the emergency shutdown of the system (internal E.S.D.).
Auxiliary mains switch Q4.
The auxiliary mains switch provides the auxiliary power supply to the UPS.
Output maintenance bypass switch Q5.
This switch should only be closed for ordinary or extraordinary maintenance operations (manual bypass). In normal
operating conditions it should be in position
0
OFF. The position
1
ON will connect the load directly to the mains
power supply. It could be used in the event of a UPS failure to power applications from the auxiliary mains while
awaiting the intervention of technical personnel.
Battery switch (on the battery cabinet).
When closed, this switch connects the batteries of the UPS to the DC/DC converter stage to power the inverter in
the event of a mains failure. The normal operating position is closed.
M
A
I
N
S
A
UX M
A
I
N
S
O
UT
P
UT
TR
AN
SF
O
RMER
B
1
I
NP
UT
TR
AN
SF
O
RMER
Confi guration with separate mains.
Q2
Q3
Q4
Q5
Legend.
B1
Battery
cabinet
Q2
Input switch
Q3
Output disconnecting switch
Q4
Auxiliary Mains switch
Q5
Manual bypass switch
Summary of Contents for MASTERYS IP+ 60
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Page 53: ...PARALLEL 1 1 REDUNDANT CONFIGURATION MASTERYS IP 60 80 kVA 3 3...
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