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HMST

High-Mast

by Holophane

The HMST~174; luminaire is designed for lighting large areas such as roadways, port facilities, airports, water treatment plants, parking lots, rail yards and storage areas.
Construction: Low copper content die cast aluminum housings provide base corrosion protection. Adjustable clamp for mounting on 2" pipe allows for +/-3 degree leveling. Weather shield between ballast housing and reflector. The effective projected area (EPA) shall not exceed 1.38 square feet.~13;~10;

~13;~10;Finish: Electrostatically applied and baked on polyester powder coat paint for superior corrosion resistance.~13;~10;Optical System: Open ventilated optical system lowers dirt depreciation, provides easy maintenance and IES cutoff, semi-cutoff and non-cutoff distribution. ~13;~10;

~13;~10;The optical system consists of thermal shock resistant borosilicate glass reflector with a spun on aluminum cover and prismatic refractor. High temperature silicone sealant between reflector and cover seals inner reflecting prismatic glass from environmental contaminants. The optical system is available in symmetric, asymmetric and long and narrow distributions. Asymmetric and long and narrow glass refractors can be rotated in the field for proper orientation. ~13;~10;

~13;~10;Electrical System: Holophane manufactured high power factor, copper wound ballast that provides full rated wattage to the lamp. Reliable starting to -40~176; F. Starter for HPS lamps is fully encapsulated. A protected starter is available that senses an inoperative or missing lamp and automatically removes itself from the circuit, preventing damage to the ballast. All ballast components are mounted to a unitized assembly with quick disconnects for ease of maintenance. A terminal block is provided for positive lead connection. Lamp support is porcelain enclosed socket with nickel plated lamp grip screw shell. 1000W HPS lamps are provided with a stainless steel lamp clamp.~13;~10;Installation: Adjustable slip-fitter bracket entry designed to accept 2~8221; pipe permitting +/-3~176; positioning adjustment.~13;~10;

Listings: UL Listed. CSA certified. The HMST luminaire is suitable for wet locations in temperatures to 40~176; C ambient operation.

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  • Specifications

    Architectural Style Traditional
    Brand Holophane
    Color Rendering Index Not Applicable
    Correlated Color Temperature Not Applicable
    Environment Outdoor
    Light Source HID
    Listings UL
    Mounting Type Arm
    Product Type High Mast
    Series HMST
    Voltage Rating 120-277, 347-480
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