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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
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