11
CPSS Emergency MASTERYS EM
10 to 80 kVA - Ref.: IOMMASELXX03-GB 00
4. OVERVIEW
Switch
Position
Description
Function
Q4
0
OFF (maintenance operations)
(1)
The switch provides the power supply to the automatic bypass line.
1
ON (normal operating conditions)
Q3
(2)
0
OFF
This completely isolates the UPS output by removing the voltage
from the applications in any operating conditions.
It is used for the emergency shutdown of the system (internal ESD).
Q5
(3)
0
Q3
0
MANUAL BYPASS
This position should only be selected for routine or special mainte-
nance operations (manual bypass); the load is connected directly to
the auxiliary mains.
It may be used in the event of a UPS failure to power applications
from the auxiliary mains while awaiting the intervention of technical
personnel.
Q5
1
Q3
1
Normal operating
This is the position for normal operation of the UPS for a continuous
power supply to the load.
Q5
0
(1) WARNING! In this confi guration the mains power supply to the rectifi er cannot be isolated inside the UPS, only via external
protection devices.
(2) Connects the UPS output to the inverter (continuous power supply).
(3) Connects the output directly to the auxiliary mains input (manual bypass).
Q2-Q4, Q3, Q5 switches
Switch in position 0 (OFF)
Switch in position 1 (ON)
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Thiele KG
• V
orderer W
einberg 26 • D-71522 Backnang • T
el.: +49 (0)7191 3560-0
• Fax.: +49 (0)7191 3560-19
• www
.thiele-kg.de
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