16900-3
CONTROLS
X, Allen-Bradley or approved equal. Relays with 30 ampere contact rating shall
be Square D, Class 8501, Type C or equal.
Pilot Duty Relays - Unless specifically noted otherwise, relays shall be general
purpose relays. General purpose relays shall be IDEC RH Series, 10A contact
rating, 4 Form “C” contacts, Allen-Bradley or approved equal, provided with
internal indicating light. Pilot duty control isolating relays for PLC inputs and
outputs shall be suitable for the application, and shall be submitted for approval
by Engineer.
Relays shall be electrically held, electrically operated with 120 volt coils except
as noted otherwise on the Drawings. Contacts shall be rated 600 volt, 10
ampere and shall be convertible from Normally Open to Normally Closed.
Where relays are used to control single-phase, fractional horsepower motors,
contacts shall be rated in accordance with the N.E.C. for the motor to be
controlled. Where relays are not installed within system control panels, provide
a suitable enclosure as specified in Section 16160, with NEMA ratings as
indicated on the Drawings.
Dry contacts used for instrumentation and SCADA inputs or other low current
inputs, shall be bifurcated cross bar gold overlay silver and rated dry circuit.
These contacts will be provided through dedicated interposing relays as shown
on the schematic diagrams of the Drawings or as specified herein. Relays shall
be provided with plug-in type sockets with screw terminal wiring connections
to facilitate relay change out and wiring. Relays shall be Potter and Brumfield
type KHAU-17A16 - 120 or 12V, IDEC, or approved equal as shown on
Drawing.
On-Delay & Off-Delay Timing Relays
1.
Solid State - Unless specifically noted otherwise, time delay relays shall be
general purpose time delay relays. General purpose time delay relays shall be
IDEC RTE, Potter-Brumfield, or approved equal.
Delay timing relays shall be solid state type rated for use at 120 volts. Contacts
shall be normally open (NO) or normally closed (NC) as detailed shown on the
Drawings or within the Specifications, and shall be rated 5 amperes (minimum).
Minimum time range shall be adjustable from 1 second to 1 minute. Other
ranges as required by function and as indicated on the Drawings or within the
Specifications. Where mounted external to control panels, delay timing relays
shall be provided with enclosures as specified in Section 16160, with NEMA
ratings as indicated on the Drawings.
Miscellaneous Indicating Lights
1.
Indicator lights shall be heavy duty, oiltight and designed to operate at 120
volts, 60 Hz AC. Indicator lights shall be provided with a chrome-plated metal
or anodized-aluminum mounting rings, engraved as indicated on the Drawings.
Lens color shall be as indicated. Indicator lights shall be 30 mm LED lamp
type, with “Push to Test” requirements to allow easy testing of bulb integrity.
Lights shall maintain NEMA rating of panel/enclosure.
Fuse Blocks
1.
Fuse blocks shall be rated for at least 30 amps and 300 volts. The clips shall be
high tensile spring brass, electro-tin plated. The base shall be polyester, glass
reinforced with a UL-94VO flammability rating.
13089K
