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Details the HFA54 relays as instantaneous, hinged-armature, multi-contact, electric-reset auxiliary relays.
Describes the HFA relays suitability for applications requiring specific operating characteristics and ratings.
Lists available coil ratings for standard voltages and current-carrying capacities of contacts.
Details features like hand reset, long-wipe contacts, and summarizes model variations.
Presents operating coil burdens measured at rated voltage for AC and DC relays.
Provides instructions for receiving, unpacking, and storing the relays to prevent damage.
Outlines mounting requirements and panel drilling details for HFA relays.
Recommends periodic testing intervals and checks for relays in power systems.
Details procedures for contact cleaning, adjustment, and pickup settings.
Explains how to adjust the main coil pickup voltage for AC and DC relays.
Instructs on how to order replacement parts, specifying necessary information.
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