15EN
MASTERYS BC+ 10-40 kVA - IOMMASBCXX0G-EN 02 - SOCOMEC
CAUTION: Residual Current Detection (RCD) can only be used in the case of a common input and auxi-
liary mains (configuration not recommended). It has to be placed upstream of the connection between
input mains and auxiliary mains. If RCD is installed the trigger value must be 0.5 A multiplied by the
number of units connected in parallel.
Use type B four-pole selective (S) residual current detectors. Load leakage currents are to be added
to those generated by the UPS and during transitory phases (power failures and power returns) short
current peaks may occur. If loads with high leakage current are present, adjust the residual current
protection. It is advisable in all cases to carry out a preliminary check on the earth current leakage with
the UPS installed and operational with the definitive load, so as to prevent the RCD tipping over.
NOTE:
To ensure the integrity of the 10-15-20 kVA 3/1 bypass thyristors, I
2
t must be lower than 14400 A
2
s and
peak current must be lower than 2.4 kA for 10 ms.
To ensure the integrity of the 10-15-20 kVA 3/3 bypass thyristors, I
2
t must be lower than 7200 A
2
s and
peak current must be lower than 1.2 kA for 10 ms.
To ensure the integrity of the 30-40 kVA 3/3 bypass thyristors, I
2
t must be lower than 15000 A
2
s and peak
current must be lower than 2 kA for 10 ms.
Contact SOCOMEC for detailed information.
The UPS is designed for transient overvoltages in category II installations. If the UPS is part of the buil-
ding’s electrical circuit, or is likely to be subject to transient overvoltages in category III installations,
additional external protection must be provided, either on the UPS or in the AC power supply network
powering the UPS.
The UPS is designed for indoor environmental service conditions according to IEC 60721-3-3 with pollu-
tion degree lower or equal to 2 (non-conductive pollution).
WARNING: as specified in 62040-3 Appendix 3: Non-linear Load Reference, in the event of three-phase
non-linear loads connected downstream of the UPS, the neutral current on the load can be 1.5 - 2 times
higher than the phase current. This must be considered when estimating the correct size of the output
and the auxiliary neutral cables.
The max. non linear load admitted per phase is 8 kVA.
WARNING: protective earthing conductor (PE) must have sufficient current-carrying capacity. The PE
cable core size must be chosen according to the PROTECTIVE CURRENT RATING of the earth circuit
which depends on the provision and location of protective overcurrent devices.
NOTE: 3-Phase 4-Wire Input Power is required.
The unit can be installed in TN-C, TN-S, TT and IT AC distribution systems (IEC 60364-3).
Additional requirements for parallel confi guration
The UPS is designed for transient overvoltages in category II installations. If the UPS is part of a parallel
configuration and the total output rated current is > 400 A, additional external protection must be provi-
ded.
The phase rotation of auxiliary mains and output cables must be the same for each unit.
System shutdown switch
H
should always be installed in the external distribution cabinet and reco-
gnised as an emergency shutdown switch (red handle). If this switch is far from the UPS or in another
room a remote shutdown button shall be installed near the UPS.
Before turning on an individual unit ensure that the relevant unit output switch
G
is closed.
Before opening unit output switch
G
ensure that the relevant unit is turned off.
To Next Page
Loading...
