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Affichage de 7561 - 7572 de 10612
Avis d'intention

Équipement de commutateur de transfert

1.1 This standard applies to: a) Automatic transfer switches; b) Manual or non-automatic transfer switches; c) Closed transition transfer switches; d) Hybrid transfer switches; e) Transfer switches for fire pumps; f) Bypass...
Avis d'intention

Interrupteurs à usage spécial

1.1 This Standard applies to manually operated and mechanically operated special use switches that are a) for use on dc, ac/dc, or ac only; and b) rated at not more than i) 60 A at 250 V or less; or ii) 30 A or 2 hp at 600 V...
Avis d'intention

Commandes de gradation à semi-conducteurs

1.1 These requirements cover permanently installed devices, hereafter referred to as dimmers, that employ a dimming function intended for control of lighting loads of the magnetic ballast, transformer, electronic ballast...
Avis d'intention

Interrupteurs à horloge

.1 This Standard applies to clock-operated switches, rated 600 V or less, designed to be used in ordinary locations to close and open circuits to a load at predetermined intervals, and intended to be employed in accordance...
Avis d'intention

Connecteurs photovoltaïques

1.1 This Standard applies to photovoltaic connectors: a) single pole, rated maximum 2000 V dc b) multi-pole, rated maximum 2000 V ac or dc 1.2 This Standard applies to photovoltaic connectors intended for use in solar...
Avis d'intention

Elevator Door Locking Devices and Contacts

These requirements cover the following elevator appliances intended for installation and operation on horizontal and vertically opening hoistway doors and gates and car doors and gates in accordance with the requirements of...

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