Electrical Connections; Connections To The Power Circuit; Shapes Of The Terminals; Examples Of Positioning The Connection Busbars According To The Types Of Terminals - ABB Emax E1 Installation And Service Instructions Manual

5.

Electrical connections

5.1. Connections to the power circuit

5.1.1.

Shapes of the terminals

Fixed circuit-breaker
HR
Horizontal rear terminals
F
Front terminals
Fig. 14
Note
The drawings are provided to show the type of terminal in graphic form. The exact shape of the terminals is given in the "Overall
dimensions" chapter.
5.1.2.

Examples of positioning the connection busbars according to the types of terminals

The connection busbars enable the connection between the terminals of the circuit-breakers and the busbars of the switchgear.
Their sizing must be carefully studied by the switchgear designer. Some examples of possible constructions in relation to the
shape and size of the circuit-breaker terminals are given in this paragraph. The various types of terminals are of constant dimen-
sions for each size of circuit-breaker: it is normally advisable to exploit the whole contact surface of the terminal, so the width of
the connection busbars should be the same as that of the terminal. Different connection capacities can be obtained by adjusting
the thickness and number of busbars in parallel. In some cases, reductions in the width of the connection in relation to that of
the terminal are allowable as shown in the following examples.
Circuit-breaker Iu [A]
E1B/N 08 800
E1B/N 10
1000
E1B/N 12 1250
E1B/N 16 1600
E2S 08 800
E2N/S 10 1000
E2N/S 12 1250
E2B/N/S 16 1600
E2B/N/S 20 2000
E2L 12 1250
E2L 16 1600
E3H/V 08 800
E3S/H 10
1000
Model L6555
VR
Vertical rear terminals
Vertical terminals
Continuous
current-carrying capacity
[A]
35°C 45°C 55°C
800 800 800
1000 1000 1000
1250 1250 1250
1600 1600 1500
800 800 800
1000 1000 1000
1250 1250 1250
1600 1600 1600
2000 2000 1800
1250 1250 1250
1600 1600 1500
800 800 800
1000 1000 1000
Fixed part for withdrawable circuit-breaker
HR
Horizontal rear terminals
Front terminals
Fig. 15
Horizontal and front terminalsi
Busbar
cross-section current-carrying capacity
2
[mm ]
35°C
1x(60x10) 800
1x(80x10) 1000
1x(80x10) 1250
2x(60x10) 1550
1x(60x10) 800
1x(60x10) 1000
1x(60x10) 1250
2x(60x10) 1600
3x(60x10) 2000
1x(60x10) 1250
2x(60x10) 1600
1x(60x10) 800
1x(60x10) 1000
Apparatus
Doc. No
1SDH000460R0002
Vertical rear terminals
F
Flat terminals
Continuous
cross-section
[A]
45°C 55°C
800 800
1000 1000
1250 1200
1450 1350
800 800
1000 1000
1250 1250
1600 1530
2000 1750
1250 1250
1500 1400
800 800
1000 1000
Emax
VR
FL
Busbar
2
[mm ]
1x(60x10)
2x(60x8)
2x(60x8)
2x(60x10)
1x(60x10)
1x(60x10)
1x(60x10)
2x(60x10)
3x(60x10)
1x(60x10)
2x(60x10)
1x(60x10)
1x(60x10)
Scale
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