Minimum Cross–Sections For Pe (Protective Conductor Equipotential Bonding Conductor - Siemens SIMODRIVE 611 digital Configuration Manual

7 Line Supply Connection
7.2 Voltage matching
Recommendation
7.2.3 Minimum cross- - sections for PE (protective conductor)/equipotential
bonding conductor
7-202
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Note
Points to bear in mind:
It is only permissible to use a delayed--tripping, (selective) AC/DC
S
current--sensitive residual--current protective device (RCCB) (connection as
shown in Fig. 7-4).
Parts of the electrical equipment and machine that can be touched are
S
integrated in a protective grounding system.
S It is not possible to connect RCCBs in series in order to implement selective
tripping.
S The max. permissible ground resistance of the "selective protection device"
must be observed (83 Ω max. for RCCBs with a rated differential current I
= 0.3 A).
The total length of the shielded power cables used in the drive group (motor
S
cable, incl. supply cables from supply system filters to the NE connection
terminals) is less than 350/500 m for sinusoidal/squarewave current.
S Operation is only permitted with line filters. Only the line filters described in
Chapter 7 may be used.
Notice
The currently widely established AC or pulse--current sensitive RCCBs are
definitely not suitable!
For selective, AC/DC-sensitive residual-current protective devices offered by
Siemens that comply with DIN VDE 0100 T480 and EN 50178, i.e. Series 5SM3
646--4 short-time delayed or Series 5SM3 646--5 selective with auxiliary discon-
nector (1 NC/1 NO) for rated current of 63 A, rated fault current I
Catalog "BETA Modular Installation Devices--ETB1")
Table 7-2 Minimum cross- -sections for PE (protective conductor)
P
rated
[kW]
5
10
28
16
36
55
80
120
Notice
Take into account IEC 61800--5--1!
e.g. double protective conductor connection or at least 10 mm
16 A.
SIMODRIVE 611 Configuration Manual (PJU) - - 05/2008 Edition
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I PE
rated
2
[A] [mm ]
7 1.5
14 4
40 10
23 4
52 16
79 16
115 25
173 50
© Siemens AG 2008 All Rights Reserved
Industry Automation
02.07 10.04
05.01
nn
= 0.3 A, see
nn
PE
[AWG/kcmil]
16
14
8
10
6
4
3
1/0
2
starting from
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