Page 162 - contactors_motor_protection_for_rolling_stock_application

Auxiliary contact blocks for AF09(Z)B ... AF38(Z)B contactors

and NF(Z)B contactor relays
Electrical durability

Electrical durability for AC-15 utilization category
AC-15 utilization category according to IEC 60947-5-1 / EN 60947-5-1:
– making current: 10 x Ie with cos ϕ = 0.7 and Ue
2 – breaking current: Ie with cos ϕ = 0.4 and Ue.
These curves represent the electrical durability of the built-in or add-on auxiliary contacts in relation to the breaking current.
The curves have been drawn for resistive and inductive loads up to 690 V, 40...60 Hz.

30 – AF09(Z)BB ... AF38(Z)B contactor built-in auxiliary contacts
20
– CA4, CAT4 and CAL4 add-on auxiliary contacts.
10
5 3 2 Example:
Million operating cycles 0.5 1 Breaking current = 1 A

On the opposite curve at intersection "O" 1 A the
corresponding value for the electrical durability is approxi-
0.3
0.2
0.1 mately 2 millions operating cycles.
0.02 0.05 0.1 0.2 0.3 0.5 1 2 3 4 5 6 10
Breaking current (A)

30 NF(Z)B contactor relays.
20
(For add on auxiliary contacts see curve above).
10
5 3 2
Million operating cycles 0.5 1

0.3
0.2
0.1
0.02 0.05 0.1 0.2 0.3 0.5 1 2 3 45 6 10
Breaking current (A)

Electrical durability for DC-13 utilization category
DC-13 utilization category according to IEC 60947-5-1 / EN 60947-5-1: making and breaking current Ie and Ue.

– AF09(Z)B ... AF38(Z)B contactor built-in auxiliary contacts
100 – CA4, CAT4 and CAL4 add-on auxiliary contacts
70 1.10 cycles – NF(Z)B contactor relays.
6
50
6
3.10 cycles Example:
Breaking power (W) 10 5 10.10 cycles Control of DC electro-magnet:
20
6
Ue voltage = 72 V DC and breaking power = 70 W.
On the opposite curve at intersection "O" 72 V / 70 W the
corresponding value for the electrical durability is approxi-
2
mately 2 millions operating cycles.
1
10 20 24 50 72 100 200 250 500
Voltage (V) 1SBC101842S0201 - Rev.A

2/150 | ABB