and Sound Suppression Device Strand Dimming Systems

and Sound Suppression Device Strand Dimming Systems
Strand Dimming Systems
and
Sound Suppression Device
For C21 or EC21 dimmer rack instillations where fan noise is objectionable, Philips Strand Lighting offers a sound suppression device for
dimmer racks utilizing the dual upper fan cooling kit. In June of 2011,
Philips Strand Lighting initiated a design change to the cooling system
for C21 and EC21 dimmer racks. This cooling change improves the
overall performance of the dimmer rack when modules are a mixture of
SCR and IGBT or is fully populated with IGBT dimming modules. The
fans have been changed from three (3) 300CFM fans in the lower
portion of the rack to two (2) 600CFM fans in the upper portion of the
rack. This change has been made to allow for better cooling and better
dimming efficiency.
Sound Suppression Device
When the the dimming rack is placed in a noise sensitive location, the
sound suppression device should be utilized to reduce the noise from
the cooling fans. This is accomplished by redirecting the exhaust air
flow into an enclosure lined with acoustical absorption foam. Designed
for field retrofit instillation, the sound suppression device can be
installed on any C21 or EC21 dimming rack (24 or 48 module versions)
utilizing top mounted fans.
Features
Q
Reduction of sound frequency from an A scale to a D scale
which in turn reduces the direction of the sound emission
Q
Reduces decibel output by over 8dB - Reduction of sound
between 8 and 10 Decibels is commonly perceived to be one
half of the previous sound pressure output
Q
Will not impede normal rack cooling
Q
Suitable for 24 and 48 module C21 / EC21 Dimming Racks
Q
Mounts easily with 4 bolts without modifying the existing
dimming rack door assembly (mounting hardware supplied with
unit)
For use with C21 and EC21 24 and 48
Module Dimming Racks
SPECIFICATION SUBMITTAL
CONSULTANT:
PROJECT NAME:
MODEL NUMBER | QUANTITY:
DATE:
PROJECT NUMBER:
APPROVED BY:
Strand Dimming Systems
C21/EC21 Dimming Rack Sound Suppression Device
Sound Supression
Device
Installed on a 24-module rack
Installed on a 48-module rack
Illustrations are for reference only Refer to installation instructions (supplied with unit) for installation requirements.
Technical Specifications
Construction:
Weight:
Dimensions:
Formed steel assembly / Sound absorbing foam with a VHB or better flame rating
5.8 lbs / 2.6 kg
14.0 (H) x 19.5 (W) x 5.63 (D) inches / 355.6 (H) x 495.3 (W) x 142.2 (D) mm
Ordering Information
Cat No.
Description
75520
C21 / EC21 Dimming Rack Sound Suppression Device (SSD)*
Note: * Includes baffle, foam block (diverter), mounting hardware and installation instructions.
Philips Strand Lighting
Dallas
10911 Petal Street
Dallas, TX 75238
Tel: (214) 647-7880
Fax: (214) 647-8030
New York
267 5th Ave, 4th Floor
New York, NY 10016
Tel: (212) 213-8219
Fax: (212) 532-2593
Auckland
19-21 Kawana Street
Northcote, Auckland 0627
New Zealand
Tel: + 64 9 481 0100
Fax: + 64 9 481 0101
Asia
Unit C, 14/F,
Roxy Industrial Centre
No. 41-49 Kwai Cheong Road
Kwai Chung, N.T., Hong Kong
Tel: + 852 2796 9786
Fax: + 852 2798 6545
062212NA_EUA
www.strandlighting.com
© Philips Group 2012
All rights reserved.
The Company reserves the right
to make any variation in design or
construction to the equipment
described. E&OE
Europe
European Service & Distribution Centre
Rondweg zuid 85
Winterswijk 7102 JD
the Netherlands
Tel: +31 (0) 543-542516
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