Voltage sag immunity

The ability of equipment to withstand momentary

electrical power interruptions or sags.

Voltage sag

An rms reduction in the AC voltage, at the power

frequency, for durations from a half cycle to a few

seconds. The IEC terminology for this phenomenon

is voltage dip.

Characteristics

• AF09Z…AF38Z, AF40…AF750 contactors and NFZ

contactor relays are compliant to SEMI F47 (1)

and withstand voltage sags for :

– required voltage sag immunity 

– recommended voltage sag immunity (≤ 20 ms)

• Conditions of use: – rated control circuit voltages between 24 V to

500 V AC 50 / 60 Hz (see selection table)

– air ambient temperature -20°C ≤ Ɵ ≤ +60°C 

– 1-stack and factory-mounted 2-stack contactors

(2 stack contactors as AF..-30-11-.., AF..-30-22-..) 

– 1-stack and 2-stack contactor relays- no additional accessories.

(1) AF09Z…AF38Z and AF40…AF370 are compliant with SEMI

F47-0706. AF400…AF750 are compliant with SEMI F47-0200.