zonex enclosures hazardous locations
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1 zonex enclosures Equipment PROTECTION hazardous locations
2 ZONEX Enclosures An expanded offering of Hinge- and Screw-cover Enclosures for hazardous locations. ATEX directive 94/9/EC and IECEX certified for Zone 1 Zone 2 rated areas. The ZONEX Enclosure family delivers reliable protection in a versatile platform. The newly expanded line of ZONEX ATEX-Certified* Enclosures includes the certifications, styles and sizes your application requires. ZONEX hinge-cover and screw-cover enclosures are designed for use in applications where increased safety protection (Ex e), is acceptable to safely house electrical components in Zone 1- and Zone 2-rated areas. These enclosures are not intended for use in explosion-proof or flame-proof (Ex d) applications. Hinge-cover versions are ATEX and IECEX certified, and available in 16 standard sizes. The screw-cover versions provide also ATEX and IECEX certification and are available in five sizes. Additional certifications such as AEx and KOSHA will be available soon (AEx certified hingecover version is already available as non-standard model). Hinge-cover versions in standard sizes ranging from 300 x 300 x 150 mm to 900 x 600 x 210 mm ZONEX Screw-Cover Model Easy-to-remove cover Type 316 stainless steel with capivated Type 316 stainless steel cover screws for corrosion resistance Screw-cover versions in standard sizes ranging from 102 x 102 x 76 mm to 254 x 254 x 127 mm Enhanced customization options allow you to specify the exact enclosure solution you need. Options include: material changes, dimension changes, paint options, holes and cutouts, population of ATEX-certified terminal blocks and more. * For more information about ATEX-certification visit: index_en.htm Bonding provisions, screw-cover style 6-mm internal/external brass bonding provision Wall-mounting brackets, screw-cover style Welded-on, full-width top and bottom wall-mount brackets for easy installation 2 ZONEX ENCLOSURES
3 ZONEX Hinge-Cover Model Wall-mounting brackets Heavy-duty 2,5-mm welded-on brackets, horizontal or vertical, for easy site installation 210-degree opening door that is easily removed by pulling clip style hinge pins Bonding provisions 10-mm brass internal/external bonding provisions Continuous gasket seal on the door and gland plate for protection against water and dust ingress Internal studs for panel or DIN rail mounting Type 316 stainless steel 3mm double bit ¼-turn for easy access and closure Full-size gland plate 3-mm thick (12 gauge) flat bottom gland plate with bonding stud and continuous gasket seal ZONEX ENCLOSURES 3
4 Selection and specification of a ZONEX Enclosure to meet your application requirements Certified for your application requirements ZONEX enclosures deliver a robust solution for termination and junction enclosure applications in potentially hazardous locations, including: Petroleum and chemical processing Water treatment processing Pharmaceutical processing Grain processing There are 2 ways to determine the correct size ZONEX Enclosure for populated terminal blocks (see page 8): Method 1: Maximum Terminal Block Count Method 2: Maximum Dissipated Power (watts) * NOTE - All selection methods must adhere to maximum dissipated power for selected enclosure size. Modification and Customization Hoffman excels at modifying and customizing ZONEX products to your specifications while maintaining ATEX and IECEX certifications. Contact your local Hoffman sales office or distributor for complete information. Hoffman offers: Material changes: Type 304 stainless steel, aluminum, mild steel Gasket changes: High-temperature silicone gasket Holes and cutouts Paint DIN rails Terminal block installation and marking Ground bars Tagging Accessory installations Zero to four gland plates* *Hinge-cover enclosures only Certification Markings ATEX IECEX AEx / Ex II 2 G D Ex e IIC T6 Gb (Ta -20 C to +40 C) Ex tb IIIC T85 C Db IP 66 II 2 G D Ex e IIC T5 Gb (Ta -20 C to +55 C) Ex tb IIIC T100 C Db IP 66 Ex e IIC T6 Gb (Ta -20 C to +40 C) Ex tb IIIC T85 C Db IP 66 Ex e IIC T5 Gb (Ta -20 C to +55 C) Ex tb IIIC T100 C Db IP 66 UL File No. E67546: Class I, Zone I AEx e IIC Tamb -20 C to +60 C Ex e IIC Tamb -20 C to +60 C 4 ZONEX ENCLOSURES
5 ATEX Directive and Classification System Since 2003, manufacturers across the European Union (EU) have been obliged to comply with strict new EU directives governing safety in explosive atmospheres. Called ATEX (from the French ATmosphères EXplosives), ATEX Directive 94/9/EC has an impact not only on European manufacturers, but also on non-european makers of industrial equipment wishing to sell in Europe. Two of the most common classification systems for hazardous locations are the Zone Classification system used by the European Union (EU) and the International Electrotechnical Commission (IEC), and the NEC Division Classification system. Area Classification US CA Flammable Substance Present Continuously Flammable Substance Present Intermittently Flammable Substance Present Abnormally IEC / EU Zone 0 Zone 1 Zone 2 NEC 505 Zone 0 Zone 1 Zone 2 NEC 500 Division 1 Division 2 CEC Section 18 Zone 0 Zone 1 Zone 2 CEC Annex J Division 1 Division 2 IEC classification per IEC EU classification per EN US classification per ANSI/NF PA 70 National Electrical Code (NEC ) Article 500 or Article 505 CA classification per CSA C22.1 Canadian Electrical Code (CEC) Section 18 or Annex J Zones Articles 505 and 506 of the NEC refer to zone classifications. Refer to the Technical Information section of the Specifier s Guide for specific definitions and additional information. Zone 2 /22 Safe Area Hoffman s ATEX enclosures are not intended for use in explosion-proof or flame-proof (Ex d) applications. ATEX Marking Directive (94/9/EC) European Explosive Atmosphere Symbol II 2 G D Equipment Group Equipment Category Gas Dust Zone 1 / 21 Zone 0 / 20 Ex e II T6 European Explosive Atmosphere Protection Concept Protection Method Gas Group Temperature Class Zone 0 / 20 Zone 1 / 21 Zone 2 / 22 Zone 0 / 20 Permanently or frequently hazardous over long periods Occasionally hazardous Rarely or temporarily hazardous Zones 20, 21 and 22 are dust Increased Safety Ex e It is assumed that the hazardous atmosphere penetrates to the enclosure interior and explosion is prevented by ensuring that either in normal operation or under fault conditions: There are no arcs or sparks No components or parts temperatures exceed the temperature limit of the corresponding temperature class Notes: ATEX and intrinsically safe certified terminal blocks can be installed in populated enclosures IECEX populated enclosures require IECEX certified components specifically listed in Certification (see IECEX SIR for more detail) Contact your local Hoffman sales office or distributor for complete information All three elements of the fire triangle must be present for ignition to occur. Ignition Source Air/Oxygen Flammable/ Combustible Substance ZONEX ENCLOSURES 5
6 ZONEX screw-cover atex-certified enclosures H+25,4 H-12,7 H-12,7 (BODY OPENING) 3,2 W 2,8 2,8 H 12,7 2,0 M5 D Y Y W-22,6 W-12,7 (BODY OPENING) 16,0 D-23,8 8,6 Y-Y W B W-50 8,6 SPECIFICATIONS: Type 316 stainless steel, 320 grain brushed finish on exterior surfaces Welded-on, full-width top and bottom wall-mount brackets for easy installation 6-mm internal/external brass bonding provision Type 316 stainless steel captivated cover screws for corrosion resistance One-piece continuous gasket for protection against water and dust ingress Internal weld nuts provided for panel or DIN rail installation Mounting plate included H-36,4 H A SCREW-COVER ATEX (Standard Sizes) Catalog Number Actual Dimensions - mm A - Height B - Width C- Depth EXE SS6E EXE SS6E EXE SS6E EXE SS6E EXE SS6E ZONEX ENCLOSURES
7 ZONEX hinge-cover atex-certified enclosures SPECIFICATIONS: Type 316 stainless steel, 320 grain brushed finish on exterior surfaces Type 316 stainless steel 3mm double bit ¼-turn insert(s) for easy access and closure 210 degree opening door that is easily removed by pulling clip style hinge pins Heavy-duty 2,5-mm welded-on brackets, horizontal or vertical, for easy site installation 3-mm thick (12 gauge) full-size bottom gland plate with bonding stud Fabricated and formed entries for gland plate screws provide quick and easy installation Continuous gasket seal on the door and gland plate for protection against water and dust ingress 10-mm brass internal/external bonding provision Mounting plate included P Q Y-Y 20,8 W W-41,6 (BODY DOOR OPENING) 2,5 D 19,4 Y 31,8 W W-63,5 11,0 H H-41,6 (BODY DOOR OPENING) M8 x 1,25 H+31,8 H 22,5 A B 13,4 20,8 28,9 D-49,8 Y 22,5 13,8 Catalog Number Actual Dimensions - mm A - Height B - Width C- Depth EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61E EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE EXE SS61HE ZONEX ENCLOSURES 7
8 selection of zonex enclosures by Terminal Block Count & Power Determine the correct size ZONEX Enclosure for populated terminal block: N by Maximum Terminal Block Count (known wire size/ match terminal block size) p by Maximum Power (watts) 1. Refer to Power and Terminal Block Matrix appropriate for selected model (screw-/hinge-cover) 2. Find a terminal block quantity less than or equal to required in the shaded areas associated with your chosen terminal block manufacturer 3. Select enclosure size 4. Use calculating power and amperage formula to verify conformance to standard 5. If maximum power is exceeded by terminal block count and amperage, select an enclosure with higher power and re-calculate Specifying enclosures with terminal block population ATEX- and IECEX-certified terminal blocks from Phoenix and Weidmuller are referenced in tables Any ATEX or IEXEX hazardous location certified terminal block may be selected and installed in ATEX-certified applications Only the table referenced terminal blocks may be specified for IECEX populations and certification Combinations of different terminal block sizes and quantities may be selected for population All terminal block installation applications need to use the CALCULATING POWER and AMPERAGE formula and associated tables on page 10 to verify compliance with final intended amperage of application and power rating of selected enclosure 1. Refer to Power and Terminal Block Matrix appropriate for selected model (screw-/hinge-cover) 2. Find maximum power required in shaded areas associated with your chosen terminal block manufacturer 3. If terminal block quantity for maximum power is insufficient, continue down and across rows until requirement is met; this provides the smallest enclosure to meet maximum power and amperage needs 4. Use calculating power and amperage formula to verify conformance to standard 5. If maximum power is exceeded by terminal block count and amperage, select an enclosure with higher power and re-calculate R Calculating Power and Amperage using combined terminal resistance factor (see page 10) Calculation of power/amperage/number of terminal blocks in accordance with EN :2007, ANEX E, E.2 P = N x R x I 2 or I = [P/(N x R)] or N=P/(R x I 2 ) Where: P is the total dissipated power (watts) N is the total number of terminals I is the current (amps) R is the sum of terminal resistance (Rt) and wire resistance (Rw) Terminal Wire Size, Voltage and Resistance (Rt) Data Manufacturer Phoenix Weidmuller (SAK/WDU) Model UK1.5 UK3 UK5 UK Terminal Wire Size Range (mm 2 ) Terminal Voltage (Volts) Terminal Resistance Rt (Ohm) 0.14 to to to to to to to to x10-04 x10-04 x10-04 x10-04 x10-04 x10-04 x10-04 x10-04 Power & Terminal Block Quantity Matrix SCREW-COVER ZONEX (Standard Sizes) N MAXIMUM TERMINAL BLOCKS Quantity Offerings per Enclosure p MAXIMUM POWER Dissipation (Watts) Phoenix Weidmuller (SAK/WDU) DIN Rail T6 at Actual Dimensions (mm) Qty Tamp T5 at Tamp UK1.5 UK3 UK5 UK = +40 C = +55 C Height Width Depth Catalog Number W 3.8 W EXE SS6E W 6.9 W EXE SS6E W 6.9 W EXE SS6E W 9.6 W EXE SS6E W 9.6 W EXE SS6E ZONEX ENCLOSURES
9 Power & Terminal Block Quantity Matrix HINGE-COVER ZONEX (Standard Sizes) N MAXIMUM TERMINAL BLOCKS Quantity Offerings per Enclosure MAXIMUM POWER Dissipation (Watts) Phoenix Weidmuller (SAK/WDU) DIN Rail T6 at Tamp T5 at Tamp Actual Dimensions (mm) UK1.5 UK3 UK5 UK Qty = +40 C = +55 C Height Width Depth W 16.5 W W 18.5 W W 18.5 W W 23.5 W p 25.5 W 25.5 W W 28 W W 28 W W 28 W W 33 W W 33 W Catalog Number EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE EXE SS61E EXE SS61HE Color shaded areas are maximum physical quantity of terminal blocks that will fit enclosure, not necessarily the allowable quantity. Actual allowable quantity is determined by amperage and power allowed through provided mathematical formula. * Maximum dissipated power based on screw type terminal blocks. Weidmuller 2.5 and smaller wire size limited to 15 amperes. ZONEX ENCLOSURES 9
10 R Combined Terminal Resistance Factor This factor is used to determine the number of terminals that can be accommodated within the enclosure without exceeding the enclosure maximum wattage rating. The combined terminal resistance factor (R) is the sum of the individual terminal resistances (Rt) and the resistance of the cable core equal in length to the enclosure maximum diagonal (Rw). The core resistance has been defined in the standard BS EN Wattage to be Dissipated (P) = N x R x I² Total Number of Terminals (N) Combined Terminal Resistance Factor (R) = (Rt + Rw) the sum of terminal resistance [Rt] and wire resistance [Rw] Maximum Current (amps) used in the application = (I) Example: A customer wants to determine the number of WDU 2.5 terminals that could be used in an EXE SS61E enclosure rated at 17.5 watts (P) and at 10 amps (I). Solving for N in the above formula N = P / (R x I 2 ): N = 16.5 / ( x 10 2 ) N = 47 The maximum physical number of WDU 2.5 terminals that can be installed on a single rail is 29 and a total of 3 rails can be installed in the enclosure, therefore two rows of 23 terminal blocks could be accommodated in the enclosure. Combined terminal resistance factor MATRIX zonex enclosures (Standard Sizes) COMBINED TERMINAL RESISTANCE FACTOR Power ratings (Watts) Phoenix Weidmuller (SAK/WDU) UK1.5 UK3 UK5 UK EXE SS6E 3.8 W EXE SS6E 6.9 W EXE SS6E 6.9 W EXE SS6E 9.6 W EXE SS6E 9.6 W EXE SS61E EXE SS61HE 16.5 W EXE SS61E EXE SS61HE 16.5 W EXE SS61E EXE SS61HE 18.5 W EXE SS61E EXE SS61HE 18.5 W EXE SS61E EXE SS61HE 18.5 W EXE SS61E EXE SS61HE 18.5 W EXE SS61E EXE SS61HE 23.5 W EXE SS61E EXE SS61HE 23.5 W EXE SS61E EXE SS61HE 25.5 W EXE SS61E EXE SS61HE 28 W EXE SS61E EXE SS61HE 28 W EXE SS61E EXE SS61HE 28 W EXE SS61E EXE SS61HE 28 W EXE SS61E EXE SS61HE 33 W EXE SS61E EXE SS61HE 33 W EXE SS61E EXE SS61HE 33 W Integrator Partner Program In response to the increasing demand for integration of increased safety ATEX/IECEX approved enclosures, Hoffman has developed a certified integrator program that allows approved integration companies to provide value-added enclosure solutions on belfalf of the Hoffman brand. The Integrator Partner Program will: Allow enclosures to be populated with terminal blocks Modify enclosures with holes, cutouts and customer tags Provides ATEX/IECEX certificate for the assembly The Integrator Partner Program makes full use of Hoffman s industry-leading network of authorized distributors and their broad stock of enclosures to provide fast and efficient delivery. 10 ZONEX ENCLOSURES
11 ATEX-certified accessories Large-Volume ATEX Purge System Type Y, Z and Ex [pz] Designed to supply one or more enclosures with a protective gas supply, Hoffman s Ex [pz] purge system is designed and certified according to European requirements of ATEX Directive 94/9 EC and EN for Type Ex [pz] applications. ATEX-certified Ex [pz] purge systems reduce the classification in the protected enclosure from Zone 2 to nonhazardous, allowing the use and operation of general purpose equipment in the protected enclosure. Used as a Type Y purge reduces classification from Div. 1 to Div. 2. Type Z purge reduces classification from Div. 2 to Non-Hazardous. Purge/pressurization systems can be used for electronics, electrical equipment, motors and switch gear in wall-mount to large enclosures, and also meet the demands of rack-mounted instrumentation, video displays, programmable controllers, computers, printers, recorders and measurement and calibration equipment. Available for 90 cubic feet maximum enclosure volume in vertical mount (VM) or horizontal mount (HM) models. Industry Standards (volume up to 90 cubic feet) 3003 WPSA Type Y System UL and FM Certified: Class I, Division I Group A,B,C, and D/Zone 1, Groups IIB and H2 to Division 2/Zone 2 Type Z System UL and FM Certified: Class 1, Division 2 Group A,B,C, and D/Zone 2, Groups IIB and H2 to Non-hazardous ATEX Certified II 3 (3) G Ex [pz] II, -29 C Tamb. 49 C Hazardous Location Thermostat For temperature control of heaters or low-temperature alarms in enclosures used in explosionhazardous areas, Hoffman s Hazardous Location Thermostat features compact design and a robust thermostatic bimetallic sensor element for >100,000 cycle service life. The thermostat is usually connected directly and switched without the need for additional relays and offers high switching capacity with small hysteresis (switching difference). Hazardous Location Heater Designed for use in hazardous locations where electronic components require protection from condensation and corrosion, sudden temperature drops and low temperatures, Hoffman s Hazardous Location Heater offers maintenancefree, high-performance heating with a large convection surface, an extruded aluminum heat sink and VAC operation. Lock INSERTS (with key) Lock inserts are field-installable. Stainless steel material and different key locking systems provides maximum protection for your equipment. HAZARDOUS LOCATION BREATHER DRAINS Hazardous Location Breather Drains prevent moisture build-up within hazardous approved enclosures while maintaining enclosure UL Type rating. Drains are to be used when an enclosure is subject to fluctuations in temperature which can lead to the formation of condensation and a subsequent moisture build-up. These drains allow air within an enclosure to breathe with the surrounding atmosphere, preventing condensation and any potential damage to electrical equipment. HAZARDOUS LOCATION WINDOW KITS Hazardous Location Window Kits are designed to be used on Increased Safety (Ex e) enclosures in ATEX or IECEx Zone 1 or 2 hazardous areas. These window kits are made with a robust heavy-gauge Type 316 stainless steel frame and a silicone gasket to ensure a dust-, oil-, and water-tight seal. Designed for use as viewing windows, these window kits are ideal for visibility of internal enclosure components. The window are easily installed by making a cutout in the enclosure and attaching the window and frame with included mounting hardware. ZONEX ENCLOSURES 11
12 SKARPNÄCK MINNEAPOLIS TORONTO MOSCOW DZIERZONIOW HEMEL HEMPSTEAD WARSAW BETSCHDORF STRAUBENHARDT LAINATE ISTANBUL QINGDAO SHIN-YOKOHAMA DUBAI SHANGHAI MEXICO D.F. BANGALORE SINGAPORE BOITUVA SĀO PAULO RIO DE JANEIRO For more information and to contact us, go to: Europe North America middle east & INDIA Asia Straubenhardt, Germany Tel: Minneapolis, MN Tel: Dubai, United Arabian Emirates Tel: Shanghai, P.R. China Tel: Betschdorf, France Tel: Radford, VA Tel: Bangalore, India Tel: Singapore Tel: Warsaw, Poland Tel: Mexico, D.F. Tel: Istanbul, Turkey Tel: Shin-Yokohama, Japan Tel: Dzierzoniow, Poland Tel: Toronto, Canada Tel: Seoul, Korea Tel: Hemel Hempstead, Great Britain Tel: Lainate, Italy Tel: Moscow, Russia Tel: Pentair, Hoffman and Design with Confidence are owned by Pentair or its global affiliates. All other trademarks are the property of their respective owners Pentair. Bro-00179
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