14 EN
MASTERYS BC+ 10-40 kVA - Ref.: IOMMASBCXX0G-EN 00
4.3 ELECTRICAL REQUIREMENTS
NOTE!
Before carrying out any operations on the unit read the 'Safety standards' chapter carefully.
The installation and system must comply with national plant regulations.
The electrical distribution panel must have a sectioning and protection system installed for input and auxiliary mains.
RCD is not necessary when the UPS is installed in a TN-S system.
RCD is not allowed on TN-C systems.
If a RCD is required a B-type should be used.
Size of input protection devices
In/Out
phase
Model rating Input Mains Breaker
(1)
Aux Mains Breaker
(1)
Differential input Battery protection
(4)
(kVA)
(A)
A B Selective type Fuse type aR
3/1
10 25 63 0.5 32
15 32 80 0.5 40
20 40 125 0.5 50
3/3
10 25 25 0.5 32
15 32 32 0.5 40
20 40 40 0.5 50
30 63 63 0.5 80
40 80 80 0.5 100
Cable core size
(2)
In/Out
phase
Model rating Input Auxiliary Output Battery
(kVA)
(mm
2
)
Max
(3)
3/1
10 25 50 50 25 M8
15 25 50 50 25 M8
20 25 50 50 25 M8
3/3
10 25 25 25 25 M8
15 25 25 25 25 M8
20 25 25 25 25 M8
30 50 50 50 50 M8
40 50 50 50 50 M8
M8 terminals Tightening torque 20 Nm
25 mm
2
Tightening torque 3 Nm
50 mm
2
Tightening torque 5 Nm
1. Circuit breaker switch recommended with magnetic intervention threshold ≥10 In (curve C). It is necessary to use a D curve
selective breaker if an optional external transformer is used.
2. For parallel configuration, cables shall have the same size and length for each unit (maximum length tolerance is ±5%).
Output cables should be less than 25 metres.
3. Determined by the size of the terminals.
4. Tripole protection on external battery cabinet.
Recommended values to avoid unwanted tripping with UPS at full power, minimum battery voltage and backup time of at
least 5 min. Recommended Rapid fuse type or thermal-magnetic circuit breaker with intervention threshold = 3 In suited for
DC applications.
To Next Page
Loading...
