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  • NEMA 250 : 2014

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    ENCLOSURES FOR ELECTRICAL EQUIPMENT (1000 VOLTS MAXIMUM)

    Available format(s): 

    Superseded date:  17-02-2020

    Language(s): 

    Published date:  06-12-2012

    Publisher:  National Electrical Manufacturers Association

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    Table of Contents - (Show below) - (Hide below)

    1 GENERAL
    2 ENCLOSURE TYPES, FEATURES, AND APPLICATIONS
    3 CONSTRUCTION
    4 MARKING 15
    5 DESIGN TESTS
    Annex A - Comparison Between NEMA Enclosure
              Type Numbers and ANSI/IEC Enclosure
              Classification Designations
    Annex B - Descriptions, Applications, Features, and
              Test Criteria of Enclosures for Hazardous
              (Classified) Locations

    Abstract - (Show below) - (Hide below)

    Describes the requirements to provide protection to the enclosed equipment against specific environmental conditions.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher National Electrical Manufacturers Association
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    AWWA C670 : 2015 ONLINE CHLORINE ANALYZER OPERATION AND MAINTENANCE
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    A A 59393 : 0 MILLING MACHINE, VERTICAL MULTISPINDLE, DOUBLE COLUMN, COMPUTER NUMERICAL CONTROL (CNC)
    FM 3615 : 2018 EXPLOSIONPROOF ELECTRICAL EQUIPMENT GENERAL REQUIREMENTS
    NFPA 654 : 2017 PREVENTION OF FIRE AND DUST EXPLOSIONS FROM THE MANUFACTURING, PROCESSING, AND HANDLING OF COMBUSTIBLE PARTICULATE SOLIDS
    API 682 : 2014 PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    NEMA ICS 18 : 2001(R2007) INDUSTRIAL CONTROL AND SYSTEMS: MOTOR CONTROL CENTERS
    PIP PCSCP001 : 2009 CONTROL PANELS SPECIFICATION
    NEMA ICS 14 : 2015 APPLICATION GUIDE FOR ELECTRIC FIRE PUMP CONTROLLERS
    MIL M 29190 : A MONITORING DEVICES, EMISSION, STACK RELATED
    A A 59472 : 0 TUMBLER, DRYING, LAUNDRY (NAVAL SUBMARINE)
    IEEE 1909.1 : 2014 RECOMMENDED PRACTICE FOR SMART GRID COMMUNICATIONS EQUIPMENT - TEST METHODS AND INSTALLATION REQUIREMENTS
    ASME HST 4M : 1991 PERFORMANCE STANDARD FOR OVERHEAD ELECTRIC WIRE ROPE HOISTS
    FM 3150 : 2003 AUDIBLE NOTIFICATION APPLIANCES FOR AUTOMATIC FIRE ALARM SIGNALING
    PIP PCSCP001 : 2014 CONTROL PANELS SPECIFICATION
    API 677 : 2006 : R2016 GENERAL-PURPOSE GEAR UNITS FOR PETROLEUM, CHEMICAL AND GAS INDUSTRY SERVICES
    04/30114086 DC : DRAFT JUL 2004 EN ISO 10440-1 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - ROTARY-TYPE POSITIVE DISPLACEMENT COMPRESSORS - PART 1: PROCESS COMPRESSORS (OIL-FREE)
    API 611 REDLINE : 2008 GENERAL-PURPOSE STEAM TURBINES FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    A A 59471 : 0 DRY CLEANING PRESSES AND FINISHING EQUIPMENT (NAVAL SHIPBOARD)
    FM 6061 : 2013 ADD 1 2016 FLAME ARRESTERS
    IEEE C37.016 : 2006 AC HIGH-VOLTAGE CIRCUIT SWITCHERS RATED 15.5 KV THROUGH 245 KV
    IEEE 1653.1:2016 TRACTION POWER RECTIFIER TRANSFORMERS FOR SUBSTATION APPLICATIONS UP TO 1500 V DC NOMINAL OUTPUT
    NEMA ICS 16 : 2001 MOTION/POSITION CONTROL MOTORS, CONTROLS, AND FEEDBACK DEVICES
    A A 50304 : 0 DYNAMOMETER, ENGINE RUN-IN, 500 HORSEPOWER CAPACITY
    10/30214867 DC : 0 BS EN ISO 21049 - PUMPS - SHAFT-SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    FM 7745 : 2012 HYDROCARBON LEAK DETECTORS
    MIL PRF 32007 : 0 OILY WASTEWATER SEPARATION SYSTEM, 6.7-GALLON PER MINUTE NAVY INTEGRATED MEMBRANE SYSTEM (NIMS)
    API 677 :2006 GENERAL-PURPOSE GEAR UNITS FOR PETROLEUM, CHEMICAL AND GAS INDUSTRY SERVICES
    API 677 : 2006 : R2010 GENERAL-PURPOSE GEAR UNITS FOR PETROLEUM, CHEMICAL AND GAS INDUSTRY SERVICES
    MIL PRF 53051 : C PUMPING ASSEMBLIES, WHEEL-MOUNTED, DIESEL ENGINE DRIVEN, BULK TRANSFER, FUEL AND POTABLE WATER PUMPING SERVICE
    PIP PCSEL001 : 2014 PROCUREMENT OF INSTRUMENTATION JUNCTION BOXES
    ASTM F 1837M : 1997 : R2007 Standard Specification for Heat-Shrink Cable Entry Seals (Metric)
    PIP ELSPF01 : 2016 MEDIUM-VOLTAGE METAL-ENCLOSED POWER FACTOR CORRECTION CAPACITOR SPECIFICATION FROM 2.4 KV TO 35 KV
    IEEE C57.148 : 2011 CONTROL CABINETS FOR POWER TRANSFORMERS
    ASME HST 1M : 89(R1995) PERFORMANCE STANDARD FOR ELECTRIC CHAIN HOISTS
    ASTM E 3137/E3137M : 2017 Standard Specification for Heat Meter Instrumentation
    ANSI/AWWA D107-16 ERR 1(CSV) COMPOSITE ELEVATED TANKS FOR WATER STORAGE
    CSA B354.5 : 2007 : R2016 MAST-CLIMBING WORK PLATFORMS
    FM 2311 : 2008 VACUUM AND PRESSURE GAUGES FOR FIRE PROTECTION SYSTEMS
    02/705659 DC : DRAFT APR 2002 ISO/DIS 21049 - PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    ASTM F 1837M : 1997 Standard Specification for Heat-Shrink Cable Entry Seals (Metric)
    UFC 3-430-11 : 2001 UNIFIED FACILITIES CRITERIA - BOILER CONTROL SYSTEMS
    CSA B354.5 : 2007 : INC : UPD 1 : 2008 : R2011 MAST-CLIMBING WORK PLATFORMS
    API 552 : 1994 TRANSMISSION SYSTEMS
    PIP ELSPS01 : 2017 ELECTRICAL REQUIREMENTS FOR PACKAGED EQUIPMENT
    A A 59777 : A DRY FILTER UNIT
    NEMA SM 24 : 1991(R2002) LAND BASED STEAM TURBINE GENERATOR SETS 0 TO 33,000 kW
    AWWA C542 : 2016 ELECTRIC MOTOR ACTUATORS FOR VALVES AND SLIDE GATES
    API 611 : 2008 GENERAL-PURPOSE STEAM TURBINES FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    CSA B354.5:2007 MAST-CLIMBING WORK PLATFORMS
    MIL DTL 2036 : E ENCLOSURES FOR ELECTRIC AND ELECTRONIC EQUIPMENT, NAVAL SHIPBOARD
    API 670 : 2014 MACHINERY PROTECTION SYSTEMS
    I.S. EN ISO 23553-1:2014 SAFETY AND CONTROL DEVICES FOR OIL BURNERS AND OIL-BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES (ISO 23553-1:2014)
    MIL PRF 32236 : 0 GENERATOR, CHLORINE PORTABLE ELECTROLYTIC (PECG)
    MIL PRF 32098 : A ULTRAFILTRATION SYSTEM, 10-GALLON PER MINUTE OILY WASTE MEMBRANE (OWMS-10)
    MIL PRF 30099 : A TREATMENT SYSTEM, BLACKWATER AND COMBINED BLACKWATER/GRAYWATER, FOR SURFACE SHIPS
    C9-17 Dry-type transformers
    NEMA ICS 3 : 2005(R2010) INDUSTRIAL CONTROL AND SYSTEMS: MEDIUM VOLTAGE CONTROLLERS RATED 2001 TO 7200 VOLTS AC
    CSA T568.2 : 2005 : R2010 COMMERCIAL BUILDING TELECOMMUNICATIONS CABLING STANDARD - PART 2: BALANCED TWISTED-PAIR CABLING COMPONENTS
    CSA T568.1 : 2005 COMMERCIAL BUILDING TELECOMMUNICATIONS CABLING STANDARD - PART 1: GENERAL REQUIREMENTS
    IEEE 1827 : 2016 ELECTRICAL AND CONTROL DESIGN OF HYDROELECTRIC WATER CONVEYANCE FACILITIES
    API 611 : 2008 : R2014 GENERAL-PURPOSE STEAM TURBINES FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    API 672 : 2004 PACKAGED, INTEGRALLY GEARED CENTRIFUGAL AIR COMPRESSORS FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    CSA T568.2 : 2005 COMMERCIAL BUILDING TELECOMMUNICATIONS CABLING STANDARD - PART 2: BALANCED TWISTED-PAIR CABLING COMPONENTS
    IEC TR 61439-0:2013 Low-voltage switchgear and controlgear assemblies - Part 0: Guidance to specifying assemblies
    API 616 REDLINE : 2011 GAS TURBINES FOR THE PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    IEEE 3001.11 : 2017 APPLICATION OF CONTROLLERS AND AUTOMATION TO INDUSTRIAL AND COMMERCIAL POWER SYSTEMS
    API 619 : 2010 ROTARY-TYPE POSITIVE DISPLACEMENT COMPRESSORS FOR PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES
    API 619 REDLINE : 2010 ROTARY-TYPE POSITIVE DISPLACEMENT COMPRESSORS FOR PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES
    API 616 : 2011 GAS TURBINES FOR THE PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    CSA T568.1 : 2005 : R2010 COMMERCIAL BUILDING TELECOMMUNICATIONS CABLING STANDARD - PART 1: GENERAL REQUIREMENTS
    ASTM C 1217 : 2000 : R2006 Standard Guide for Design of Equipment for Processing Nuclear and Radioactive Materials
    API 682 CHINESE : 2014 PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    API 673 : 2014 CENTRIFUGAL FANS FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    ASTM E 2513 : 2007 : R2012 Standard Specification for Multi-Story Building External Evacuation Platform Rescue Systems
    CSA ISO/IEC TR 24729-3:14 (R2019) Information technology - Radio frequency identification for item management - Implementation guidelines - Part 3: Implementation and operation of UHF RFID Interrogator systems in logistics applications (Adopted ISO/IEC TR 24729-3:2009, first edition, 2009-05-15)
    API STD 541 : 2014 FORM-WOUND SQUIRREL CAGE INDUCTION MOTORS - 375 KW (500 HORSEPOWER) AND LARGER
    API 613:2003 SPECIAL PURPOSE GEAR UNITS FOR PETROLEUM, CHEMICAL AND GAS INDUSTRY SERVICES
    FM 1112 : 2006 INDICATING VALVES (BUTTERFLY OR BALL TYPE)
    ISO 23551-1:2012 Safety and control devices for gas burners and gas-burning appliances Particular requirements Part 1: Automatic and semi-automatic valves
    BS EN 62040-1 : 2008 UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 1: GENERAL AND SAFETY REQUIREMENTS FOR UPS
    IEEE 1623 : 2004 GUIDE FOR THE FUNCTIONAL SPECIFICATION OF MEDIUM VOLTAGE (1 KV - 35 KV) ELECTRONIC SHUNT DEVICES FOR DYNAMIC VOLTAGE COMPENSATION
    IEEE 515.1 : 2012 TESTING, DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL RESISTANCE TRACE HEATING FOR COMMERCIAL APPLICATIONS
    IEEE 2030.2 : 2015 GUIDE FOR THE INTEROPERABILITY OF ENERGY STORAGE SYSTEMS INTEGRATED WITH THE ELECTRIC POWER INFRASTRUCTURE
    IEEE C93.4 : 2012 POWER-LINE CARRIER LINE-TUNING EQUIPMENT (30 KHZ TO 500 KHZ) ASSOCIATED WITH POWER TRANSMISSION LINES
    ANSI N42.38:2015 PERFORMANCE CRITERIA FOR SPECTROSCOPY-BASED PORTAL MONITORS USED IN HOMELAND SECURITY
    NEMA ICS 7 : 2014 INDUSTRIAL CONTROL AND SYSTEMS: ADJUSTABLE - SPEED DRIVES
    ASTM F 1837M : 1997 : R2002 Standard Specification for Heat-Shrink Cable Entry Seals (Metric)
    ISO/IEC TR 24729-3:2009 Information technology Radio frequency identification for item management Implementation guidelines Part 3: Implementation and operation of UHF RFID Interrogator systems in logistics applications
    PIP PCCEL001 : 2015 INSTRUMENTATION ELECTRICAL DESIGN CRITERIA
    FM 3232 : 2011 VIDEO IMAGE FIRE DETECTORS FOR AUTOMATIC FIRE ALARM SIGNALING
    ASTM F 1837M : 1997 : R2012 : EDT 1 Standard Specification for Heat-Shrink Cable Entry Seals (Metric)
    ANSI C93.4 : 2012 REQUIREMENTS FOR LINE TUNING UNITS
    IEEE DRAFT C136.27 : JUN 95 TUNNEL LIGHTING LUMINAIRES
    SAE ARP 1804 : 2017 ELECTRIC BAGGAGE/CARGO TRACTOR
    NEMA ICS 1.3 : 1986(R2015) PREVENTIVE MAINTENANCE OF INDUSTRIAL CONTROL AND SYSTEMS EQUIPMENT
    TIA 758 : B2012 CUSTOMER OWNED OUTSIDE PLANT TELECOMMUNICATIONS INFRASTRUCTURE STANDARD
    B354.12-17 Design, calculations, safety requirements, and test methods for mast climbing transport platforms (MCTPs)
    AWWA F110 : 2016 ULTRAVIOLET DISINFECTION SYSTEMS FOR DRINKING WATER
    ASTM C 1217 : 2000 : R2012 Standard Guide for Design of Equipment for Processing Nuclear and Radioactive Materials
    ASTM E 2484 : 2008 : R2015 Standard Specification for Multi-Story Building External Evacuation Controlled Descent Devices
    API 14FZ : 2013 RECOMMENDED PRACTICE FOR DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, ZONE 0, ZONE 1, AND ZONE 2 LOCATIONS
    API 14F REDLINE : 2008 DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS
    API 614 : 2008 LUBRICATION, SHAFT-SEALING AND OIL-CONTROL SYSTEMS AND AUXILIARIES
    ASTM E 2513 : 2007 Standard Specification for Multi-Story Building External Evacuation Platform Rescue Systems
    B354.9-17 Design, calculations, safety requirements, and test methods for mast climbing work platforms (MCWPs)
    FM 3265 : 2017 SPARK DETECTION AND EXTINGUISHING SYSTEMS
    FM 5700 : 2018 EXPLOSION SUPPRESSION SYSTEMS
    API 14F:2008 DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS
    ASTM F 2072 : 2014 : REDLINE Standard Test Method for Hosedown of a Membrane Switch
    API 14F : 2008 : R2013 DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS
    API 551 : 2016 PROCESS MEASUREMENT
    ASTM F 1895 : 2014 : REDLINE Standard Test Method for Submersion of a Membrane Switch
    ASTM E 2484 : 2008 Standard Specification for Multi-Story Building External Evacuation Controlled Descent Devices
    ASTM C 1217 : 2000 Standard Guide for Design of Equipment for Processing Nuclear and Radioactive Materials
    ASHRAE 90.4 : 2016 ENERGY STANDARD FOR DATA CENTERS
    NFPA 1 HDBK : 2015 FIRE CODE HANDBOOK
    I.S. EN 62026-3:2015 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - CONTROLLER-DEVICE INTERFACES (CDIS) - PART 3: DEVICENET
    I.S. EN 62040-1:2008 UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 1: GENERAL AND SAFETY REQUIREMENTS FOR UPS (IEC 62040-1:2008 (EQV))
    EN 62026-3:2015 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - CONTROLLER-DEVICE INTERFACES (CDIS) - PART 3: DEVICENET (IEC 62026-3:2014 + COR1:2015)
    ASME A17.1 : 2016 SAFETY CODE FOR ELEVATORS AND ESCALATORS - INCLUDES REQUIREMENTS FOR ELEVATORS, ESCALATORS, DUMBWAITERS, MOVING WALKS, MATERIAL LIFTS, AND DUMBWAITERS WITH AUTOMATIC TRANSFER DEVICES
    NFPA 79 : 2018 ELECTRICAL STANDARD FOR INDUSTRIAL MACHINERY
    NFPA 20 HDBK : 2016 STATIONARY FIRE PUMPS HANDBOOK
    EN 62040-1:2008/A1:2013 UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 1: GENERAL AND SAFETY REQUIREMENTS FOR UPS (IEC 62040-1:2008/A1:2013)
    ASME A17.1-2016/CSA B44-16 Safety code for elevators and escalators (Bi-national standard, with ASME A17.1)
    ANSI N42.35 : 2006 EVALUATION AND PERFORMANCE OF RADIATION DETECTION PORTAL MONITORS FOR USE IN HOMELAND SECURITY
    DIN EN ISO 23553-1:2014-09 SAFETY AND CONTROL DEVICES FOR OIL BURNERS AND OIL-BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES (ISO 23553-1:2014)
    IEEE C37.21 : 2005 CONTROL SWITCHBOARDS
    ANSI N42.43 : 2006 PERFORMANCE CRITERIA FOR MOBILE AND TRANSPORTABLE RADIATION MONITORS USED FOR HOMELAND SECURITY
    IEEE 1818 : 2017 GUIDE FOR THE DESIGN OF LOW-VOLTAGE AUXILIARY SYSTEMS FOR ELECTRIC POWER SUBSTATIONS
    BS EN 62026-3:2015 Low-voltage switchgear and controlgear. Controller-device interfaces (CDIs) DeviceNet
    BS PD IEC TR 61439-0 : 2013 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 0: GUIDANCE TO SPECIFYING ASSEMBLIES
    BS EN ISO 13631:2002 Petroleum and natural gas industries. Packaged reciprocating gas compressors
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    BS EN ISO 10440-1:2001 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - ROTARY-TYPE POSITIVE-DISPLACEMENT COMPRESSORS - PART 1: PROCESS COMPRESSORS
    10/30215301 DC : 0 ISO 23551-1 - SAFETY AND CONTROL DEVICES FOR GAS BURNERS AND GAS-BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES
    ISO 10438-1:2007 Petroleum, petrochemical and natural gas industries Lubrication, shaft-sealing and control-oil systems and auxiliaries Part 1: General requirements
    IEC 62026-3:2014 Low-voltage switchgear and controlgear - Controller-device interfaces (CDIs) - Part 3: DeviceNet
    BS EN ISO 21049 : 2004 PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    BS EN ISO 23553-1:2014 Safety and control devices for oil burners and oil-burning appliances. Particular requirements Automatic and semi-automatic valves
    ISO 23553-1:2014 Safety and control devices for oil burners and oil-burning appliances Particular requirements Part 1: Automatic and semi-automatic valves
    12/30250105 DC : 0 BS ISO 23553-1 - SAFETY AND CONTROL DEVICES FOR OIL BURNERS AND OIL BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES (ISO/DIS 23553-1:2012)
    BS EN ISO 10438-1:2003 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 1: GENERAL REQUIREMENTS
    12/30261041 DC : 0 BS EN 62026-3 - LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - CONTROLLER-DEVICE INTERFACES (CDIS) - PART 3: DEVICENET
    ISO 10440-1:2007 Petroleum, petrochemical and natural gas industries Rotary-type positive-displacement compressors Part 1: Process compressors
    UNE-EN ISO 23553-1:2014 Safety and control devices for oil burners and oil-burning appliances - Particular requirements - Part 1: Automatic and semi-automatic valves (ISO 23553-1:2014)
    ISO 13631:2002 Petroleum and natural gas industries Packaged reciprocating gas compressors
    ICC 2012 INTERNATIONAL FIRE CODE : 2012 INTERNATIONAL FIRE CODE
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    ICC IFC CODE & COMMENTARY VOLUME 1 & 2 : 2015 IFC® Code and Commentary
    ASTM F 2363/F2363M : 2017 : REDLINE Standard Specification for Sewage and Graywater Flow Through Treatment Systems
    I.S. EN ISO 10440-1:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - ROTARY TYPE POSITIVE-DISPLACEMENT COMPRESSORS - PART 1: PROCESS COMPRESSORS
    NFPA 79 HDBK : 2015 Electrical Standard for Industrial Machinery Handbook
    I.S. EN ISO 10438-1:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 1: GENERAL REQUIREMENTS
    EN ISO 10438-1:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 1: GENERAL REQUIREMENTS
    EN ISO 13631 : 2002 PETROLEUM AND NATURAL GAS INDUSTRIES - PACKAGED RECIPROCATING GAS COMPRESSORS
    EN ISO 23553-1:2014 SAFETY AND CONTROL DEVICES FOR OIL BURNERS AND OIL-BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES (ISO 23553-1:2014)
    EN ISO 21049:2004 PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    EN ISO 10440-1 : 2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - ROTARY-TYPE POSITIVE-DISPLACEMENT COMPRESSORS - PART 1: PROCESS COMPRESSORS
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