Power Cables Cross-Section; Protecting The Relay Output Contacts And Attenuating Disturbances In Case Of Inductive Loads - ABB ACSM1 Hardware Manual
Regen supply modules
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- Manual (510 pages) ,
- Firmware manual (448 pages) ,
- Hardware manual (112 pages)
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Power cables cross-section
Cross-sections for mains supply connection cables (regen filter module)
ACSM1-204
-07A0-4
-016A-4
-031A-4
-046A-4
-090A-4
Cross-sections for DC connection cables (regen supply module)
ACSM1-204
-07A0-4
-016A-4
-031A-4
-046A-4
-090A-4
*
**
Protecting the relay output contacts and attenuating disturbances in case
of inductive loads
Inductive loads (relays, contactors, motors) cause voltage transients when switched
off.
The relay output on the regen supply module is protected with varistors (250 V)
against overvoltage peaks. In addition, it is highly recommended to equip inductive
loads with noise attenuating circuits (varistors, RC filters [AC] or diodes [DC]) in
order to minimize the electromagnetic emissions at switch-off. If not suppressed, the
disturbances may connect capacitively or inductively to other conductors in the
control cable and form a risk of malfunction in other parts of the system.
Filter
WFU-01
WFU-02
WFU-11
WFU-21
WFU-22
Min. cross section (UDC+, UDC-)
EN 60204-1*
B1
2
(mm
)
1.5
4
10
16
50
Minimum cable cross-section according to EN 60204-1 with different installation methods.
The values are valid for PVC-insulated copper cables at an ambient temperature of
40 °C (104 °F).
Minimum cable cross-section according to NEC for copper cables rated for 75 °C (167 °F) at
an ambient temperature of 40 °C (104 °F).
Min. cross section (L1, L2, L3)
EN 60204-1*
B1
B2
2
2
(mm
)
(mm
)
1.5
1.5
2.5
4
10
10
16
16
35
50
B2
C
2
2
(mm
)
(mm
)
1.5
1.5
4
2.5
10
10
25
16
70
50
NEC**
C
(AWG)
2
(mm
)
1.5
16
2.5
12
6
8
10
6
35
2
NEC**
(AWG)
14
12
8
6
1
Planning the electrical installation
43
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