Hardware and Connections
2-8 7SA522 Manual
C53000-G1176-C119-2
Connections to
Current Terminals
Ring-type and fork-type lugs may be used. To ensure that the insulation paths are
maintained, insulated lugs must be used. Alternatively, the crimping area must be in-
sulated with other methods, e.g. by covering with a shrink sleeve.
The following must be observed:
Connections with cable lugs
: inner diameter of lugs, 5 mm;
maximum outer diameter of lugs, 12 mm;
conductor with cross-section of 2.7 mm
2
to 6.6 mm
2
(AWG 13 to 9).
Use copper wires only!
Cable lugs of series PIDG from AMP Co. are recommended, e.g.,
Ring cable lug: PIDG PN 130 171–0
Spade lug: PIDG PN 326 865–0
Direct cable connections
: solid or stranded conductor with connector sleeve;
conductor with cross-section of 2.0 mm
2
to 5.0 mm
2
(AWG 14 to 10).
Use copper wires only!
Maximum tightening torque
: 2.7 Nm (2.0 ft-lb or 24 in-lb).
Short-Circuit Links Short-circuit links are available for convenience in making terminal connections.
The short circuit links can connect two neighbouring terminals located on the same
side of the terminal module. By connecting further links, neighbouring terminals can
be included in the short circuit. On each terminal it is possible to connect two short-
circuiting links, or one short-circuit link and one lug, or one individual conductor.
The links meet the safety requirements for protection against electric shock.
There are two types of links, one for voltage connections and one for current connec-
tions. The links are illustrated in Figure 2-8. Ordering information for the links is pro-
vided in Section 1.1 in the Appendix.
Figure 2-8 Short-circuit links for voltage connections and current connections
Covering Caps Terminal covering caps are available for the screw terminal modules, to increase the
protection of personnel against hazardous voltages (degree of protection against ac-
cess to dangerous parts) on the terminal modules. The degree of protection is in-
creased from the standard “back of the hand protection” (IP1x)“ to „finger protection
(IP2x)“.
The terminal covering caps provide an enclosure which securely covers all voltage
carrying components. They are simply snapped onto the terminal module. It must be
noted that all screws on the terminal module must be screws in before snapping the
cover on. The terminal covering cap can simply be removed with a screw driver 6x1
mm.
Short-circuit links for
voltage connections
Short-circuit links for
current connections
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