7
CPSS Emergency MASTERYS EM
10 to 80 kVA - Ref.: IOMMASELXX03-GB 00
3. ELECTRICAL INSTALLATION
NOTE!
Before carrying out any operations on the unit read the Safety standards chapter carefully.
3.1. ELECTRICAL
REQUIREMENTS
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.
Use a differential switch (type B) installed on the mains power switch, which must be inserted upstream from the distribution panel.
The table below shows the size of the input protection devices recommended for correct installation.
Size of input protection devices
UPS
Magneto-
thermal input
(1)
Magneto-ther-
mal Aux Mains
(1)
Diff erential
input
(5)
Input/Output cable
core size
Battery cable core
size
Battery
protection
(4)
(kVA)
(A)
(A)
(A)
(mm
2
)
(mm
2
)
(A)
selective type
(5)
Min
Max
(3)
Min
Max
(3)
10 3/1
32
(100 if common
input mains)
100
0.5
6
(16 aux mains
and output)
35
6
35
50 Gr
15 3/1
32
(100 if common
input mains)
100
0.5
6
(25 aux mains
and output)
35
6
35
50 Gr
20 3/1
40
(125 if common
input mains)
125
0.5
10
(35 aux mains
and output)
35
10
35
50 Gr
10 3/3
32
32
0.5
6
35
6
35
50 Gr
15 3/3
32
32
0.5
6
35
6
35
50 Gr
20 3/3
40
40
0.5
10
35
10
35
50 Gr
30 3/3
63
63
0.5
16
35
16
35
100 Gr
40 3/3
80
80
0.5
25
35
25
35
100 Gr
60 3/3
125
125
0.5
35
50
50
95
200 aR
80 3/3
160
160
0.5
50
50
70
95
250 aR
1
Recommended magneto thermal switch: four poles with intervention threshold ≥ 10 In (curve C). It is necessary to use a D curve selective
breaker if an optional external transformer is used.
2
In systems with two or more UPSs operating in a redundant or power parallel confi guration.
3
Determined by the size of the terminals.
4
Protection on the external battery cabinet (preferably 2 bipolar protection devices or one quadripolar).
5
Caution! Use type B four-pole selective (S) circuit breakers. Load leakage currents are added to those generated by the UPS and during transi-
tory phases (power failure and power return) short current peaks may occur. If loads with high leakage current are present adjust the diff erential
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 defi nitive load, so as to prevent the sudden activation of the above switches.
The UPS is designed for transitory overvoltages in category II installations. If the UPS is part of the building’s electric
circuit or is likely to be subject to transitory overvoltages in category III installations, further external protection must
be provided, either on the UPS or in the AC power supply network to the UPS. Additionally, the ‘surge arrestor’ option,
specially designed to protect against residual overvoltages in category III installations, can be installed in the external
manual bypass cabinet. If used, the distance between the UPS and the centralised 4 kV SPD protection devices type
1 must be Up ≤ 4kV is ≥ 15m.
In the event of three-phase distorting loads connected in output, the current on the neutral conductor may have a
value that is 1.5 - 2 times the phase value (also for the input bypass). In this case, size the neutral cables and the input/
output protection adequately.
IMPORTANT!
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.
YOUR CONNECTION TO SAFETY
Thiele KG
• V
orderer W
einberg 26 • D-71522 Backnang • T
el.: +49 (0)7191 3560-0
• Fax.: +49 (0)7191 3560-19
• info@thiele-kg.de
• www
.thiele-kg.de
Thiele KG
• V
orderer W
einberg 26 • D-71522 Backnang • T
el.: +49 (0)7191 3560-0
• Fax.: +49 (0)7191 3560-19
• info@thiele-kg.de
• www
.thiele-kg.de
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