Page is loading ...
Pelco, the Pelco logo, and other trademarks associated with Pelco products referred to in this publication are trademarks of Pelco, Inc. or its affiliates. © Copyright 2012, Pelco, Inc.
ONVIF and the ONVIF logo are trademarks of ONVIF Inc. All other product names and services are the property of their respective companies. All rights reserved.
Product specifications and availability are subject to change without notice.
The materials used in the manufacture of this document and its components are compliant to the requirements of Directive 2002/95/EC.
Pelco, Inc. 625 W. Alluvial Fresno, California 93711
United States USA & Canada Tel (800) 289-9100 Fax (800) 289-9150
International Tel +1 (559) 292-1981 Fax +1 (559) 348-1120
www.pelco.com
System Connection Examples
NOTE: The following illustrations of system connections are provided only as a guideline. Actual connections are dictated by local authorities and the A&E
specifications of the site. Pelco makes no recommendations on the connection of this system in a hazardous location.
ì
Nipples (supplied with enclosure)
î
Sealing fittings (supplied with enclosure)
ï
Explosionproof nipple
ñ
Explosionproof elbow
ó
Explosionproof flexible conduit, for Class 2 wiring
r
Explosionproof flexible conduit, for Class 1 wiring
s
Explosionproof J-box, for connection of pan/tilt and
Class-1 camera; for ease of wire pulls, locate as close to
the pan/tilt as possible
t
Sealing fitting, for separation of hazardous and
nonhazardous locations
u
Sealing fitting (supplied provided pan/tilt)
~í
Nipple (supplied with pan/tilt)
ì
Nipple (supplied with enclosure)
î
Sealing fitting (supplied with enclosure)
ï
Explosionproof nipple
ñ
Explosionproof flexible conduit, for Class 2 wiring
ó
Sealing fitting, for separation of hazardous and nonhazardous
locations
WARNING: Be sure to seal the cable entry conduit fitting with the appropriate sealant (not supplied) during installation.
ENCLOSURE
PAN/TILT
Figure 6. EHX*E Enclosure and PT1260EX Pan/Tilt
EXSITE
POSITIONING
SYSTEM
Figure 7. ExSite Series Explosionproof Positioning System
REVISION HISTORY
Manual # Date Comments
C903M 9/92 Original version.
C903M-A 11/94 Revised format to two columns. Added an example system connection containing a figure and parts description.
C903M-B 6/03 Added "For U.S. reference only." Changed "Example System Connection" to "System Connection Example." Changed "EHX" to EHX*E."
C903M-C 8/04 Document rewritten and reformatted. Added information about NEC installation requirements, and added Introduction. Added another figure and parts
description. Some information removed.
C903M-D 4/10 Document rewritten and reformatted. Added "EECEX and ATEX Only" information. Added Parts List and User-Supplied Parts.
C903M-E 10/10 Added a warning to install appropriate sealant.
C903M-F 4/13 Added UL/cUL zones and U.S. Groups C&D (Explosion Proof) information in the headings, and included metric measurements.
A certified flameproof “d”, “tb”, and IP66 sealing device, such as a stopping box with setting compound, shall be provided either in the flameproof enclosure
or immediately at the entrance thereto.
This document is based on NEC installation requirements for equipment installed in hazardous locations in the United States of America.
Description
Conduit seals prevent explosions from spreading through conduit systems and igniting outside atmospheres. When properly installed and filled with a
UL-listed sealing compound, they prevent the passage of gases, vapors, or flames from spreading from a hazardous location to a nonhazardous location.
The information describes the main purposes for seal fittings:
• Restrict the passage of gases, vapors, or flames from one part of the conduit system to another area of
the system.
• Limit explosions to the sealed enclosure.
• Prevent precompression, or “pressure piling,” in conduit systems.
PARTS LIST
For an example of possible system connections, refer to System Connection Examples on page 4.
EHX*E SERIES ENCLOSURE AND PT1260EX PAN/TILT
EXSITE SERIES EXPLOSIONPROOF POSITIONING SYSTEM
USER-SUPPLIED PARTS
EHX*E Series Enclosure and PT1260EX Pan/Tilt ExSite Series Explosionproof Positioning System
For IECEX, ATEX, and UL/cUL Zones Only
For U.S. Groups C&D (Explosion Proof) Only
WARNING: Failure to follow safety instructions may cause ignition of hazardous
atmosphere resulting in serious personal injury and/or property damage.
Qty Description
2 Nipple (supplied with enclosure)
2 Sealing fitting (supplied with enclosure)
1 Sealing fitting (supplied with pan/tilt)
1 Nipple (supplied with pan/tilt)
Qty Description
1 Nipple (supplied with enclosure)
1 Sealing fitting (supplied with enclosure)
Qty Description Qty Description
1 Explosionproof nipple 1 Explosionproof nipple
1 Explosionproof elbow 1 Explosionproof flexible conduit (Class 2 wiring)
1 Explosionproof flexible conduit (Class 2 wiring) 1 Sealing fitting
1 Explosionproof flexible conduit (Class 1 wiring) 1 Sealing compound
1 Explosionproof J-box 1 Fiber filler
1 Sealing fitting
1 Sealing compound
1 Fiber filler
EXPLOSIONPROOF
SWITCH
IGNITABLE GASES OR VAPORS
IGNITED BY SPARK OF SWITCH
EXPLOSION CONFINED
WITHIN SEALED AREA
SF SEAL WITH DRAIN VALVE
SEALING CEMENT
POURING OPENING
FIBER DAM
Figure 1. How Gases, Vapors, and
Flames Are Contained
INSTALLATION
Conduit Sealing Instructions for Equipment in
Hazardous Locations
C903M-F (4/13)
2 C903M-F (4/13)
NEC SEC. 501-15 HIGHLIGHTS ON SEALING FITTING REQUIREMENTS
CLASS I, DIV. 1 AND 2
Conduit seals must be placed within 45cm (18 in.) of the conduit entry to an explosionproof enclosure where either of the following apply:
1. The enclosure contains apparatus that may produce arcs, sparks, or high temperatures.
2. The conduit entry is metric designator 53 (trade size 2) or larger and the enclosure contains terminals, splices, or taps.
Figure 2. Conduit Seal Distance
Sealing fittings must be installed at a boundary between a hazardous and nonhazardous area. Sealing fittings must also be installed at a boundary between
a Class I, Div. 1 area and a Class I, Div. 2 area.
Figure 3. Sealing the Enclosures
Other NEC Requirements:
• Splices and taps are not to be used in sealing fittings.
• Where moisture may accumulate in system, an approved method must be provided to remove such accumulation.
• Depth of sealing compound should be to trade size of conduit, having a minimum thickness of 5/8 of an inch.
NOTE: Values in parentheses are inches; all others are centimeters.
ENCLOSURE
TO BE SEALED
45.00 MAX
(18.00)
NONHAZARDOUS AREA
NONHAZARDOUS AREAHAZARDOUS AREA
HAZARDOUS AREA
NO UNION, COUPLING, BOX, OR FITTING IN CONDUIT
IS PERMITTED BETWEEN SEALING FITTING AND
POINT WHERE CONDUIT LEAVES HAZARDOUS AREA
ENCLOSURE
TO BE SEALED
ENCLOSURE TO BE SEALED
SEAL MAY BE POSITIONED
ON EITHER SIDE OF BOUNDARY
C903M-F (4/13) 3
Installation
1. Run the conductors through the fitting.
2. Pack the sealing fitting with fiber filler. In a horizontal run, place the fiber filling at both ends of the fitting (refer to Figure 4); in a vertical run, fill only
the bottom end (refer to Figure 5).
Fiber filler makes a dam that keeps the sealing compound in the chamber of the sealing fitting while it cures and hardens. The fiber dam is also used
to separate the individual conductors so the sealing compound seals around each conductor. If the electrical conductors are not properly separated,
gases can migrate through the seal, making the seal ineffective.
3. Prepare the sealing compound. Use sealing compound suitable for the application and follow the instructions supplied by the sealing compound
manufacturer.
4. Pour the sealing compound into the fitting.
FIBER FILLER
SEALING
COMPOUND
Figure 5. Vertical Fitting, Damming and Sealing
SEALING COMPOUND
FIBER FILLER
Figure 4. Horizontal Fitting, Damming and Sealing
/