[dw_7xr81 st 12-pin terminal B, 1, en_US]
Figure 1-2 Screw-type 12-pin Terminal A Block
If you use fork-type cable lugs or connector sleeves, the crimp zone must be insulated to comply with the
required insulating clearance. This can also be done using shrink-on sleeves.
Connection via Ring-Type Lugs
For connection via ring-type lugs for bolt diameter 4 mm:
•
Max. diameter: 10 mm
•
Wire cross-section from 1.0 mm
2
to 2.6 mm
2
resp. AWG 16 to AWG 14
•
Use copper conductors only.
Cable lugs series PIDG of Messrs. Tyco Electronics AMP are recommended, e.g. ring-type cable lug PIDG PN
320565-0 and fork-type cable lug PIDG PN 321233-0.
Direct Connection
For direct connection with solid bare wire or flexible wire with end sleeves for cross-section from 0.5 mm
2
to
2.6 mm
2
(AWG 20 to AWG 14) follow these recommendations:
•
When using 1 single conductor, the conductor end must be inserted in a way that it will be drawn into
the contact cavity while tightening the screw.
•
Wire strip length solid bare wire 9 mm to 10 mm (0.354 in to 0.394 in).
•
Max. torque value 1.8 Nm (16 in-lb).
•
Use copper conductors only.
7XR81 – Coupling Device for Rotor Ground-Fault Protection
1.2 Connection Notes
14 SIPROTEC, Coupling Units for Generator Protection, Manual
C53000-H5040-C072-1, Edition 09.2018
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