34
MASTERYS
BC 60-80 kVA - Ref.: IOMMASBCXX06-EN 06
9. ELECTRICAL OPTIONS
9.1. INSULATION
CONTROLLER
This device continually checks transformer insulation, displaying an alarm message on the mimic panel.
9.2. EXTERNAL MAINTENANCE BYPASS
This device will electrically exclude and isolate the UPS (e.g. for maintenance operations) without interrupting the power supplied
to the load (see paragraph 3.4).
9.3. ACS
PCB
Synchronises UPS output with an external power source (another UPS, even of a different brand, generator or transformer).
9.4. SEPARATE AUXILIARY POWER SUPPLY
This allows the use of an auxiliary energy source other than the primary mains power supply in the event of outage.
9.5. EXTERNAL BACKFEED PROTECTION
External devices can be installed to protect against the backfeed of dangerous currents, both on the
MAINS SUPPLY
and on the
AUX MAINS SUPPLY
. These devices are controlled by the
BKF PCB
shown in figure 9.5-1.
The
BKF PCB
is installed in the position shown in figure 9.5-2.
Refer to the following paragraphs for details on electrical connections and activating the chosen protection.
9.5-1
9.5-2
XC1
XB1
XB3
XB2
OUTPUT
L12 L22 L32 N2
EXTERNAL BATTERY
+B2 –B2 –B1 +B1
AUX MAINS SUPPLY
L11 L21 L31 N1
MAINS SUPPLY
L1 L2 L3 N
XC1
XB2
XB1
