ABB SACE Emax E4.2 - Positioning Anchor Plates; Earthing

ABB | SACE Emax 2
Emax E2.2-E4.2-E6.2 circuit-breakers | 6 - Installation
29 | © 2013 ABB | 1SDH001000R0002 - L7804
Positioning anchor plates
The diagram below indicates the distance for positioning the first anchor plate according to the
type of circuit-breaker type and the peak current:
150
200
250
300
350
400
450
500
80 100 120 140 160 180 200 220 240 260
E2.2 E4.2 E6.2
L [mm]
(1)
Ipk [kA]
(2)
L
L
Figure 59
(1): distance of the first anchor plate from the circuit-breaker terminals
(2): peak current
Earthing
The circuit-breaker in fixed version and the fixed part of withdrawable circuit-breaker are
equipped with a screw for the earth connection.
The connection must be implemented by means of a conductor of suitable cross-section
according to the IEC 61439-1 standard.
Clean and degrease the area around the screw before making the connection.
After assembly of the conductor, lock the screw with a torque of 2 Nm.
Figure 60
Figure 61