ELCGL01D

November 2002

Process Industry Practices Electrical

PIP ELCGL01D Data Sheet for Electrical Design Criteria

PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES In an effort to minimize the cost of process industry facilities, this Practice has been prepared from the technical requirements in the existing standards of major industrial users, contractors, or standards organizations. By harmonizing these technical requirements into a single set of Practices, administrative, application, and engineering costs to both the purchaser and the manufacturer should be reduced. While this Practice is expected to incorporate the majority of requirements of most users, individual applications may involve requirements that will be appended to and take precedence over this Practice. Determinations concerning fitness for purpose and particular matters or application of the Practice to particular project or engineering situations should not be made solely on information contained in these materials. The use of trade names from time to time should not be viewed as an expression of preference but rather recognized as normal usage in the trade. Other brands having the same specifications are equally correct and may be substituted for those named. All Practices or guidelines are intended to be consistent with applicable laws and regulations including OSHA requirements. To the extent these Practices or guidelines should conflict with OSHA or other applicable laws or regulations, such laws or regulations must be followed. Consult an appropriate professional before applying or acting on any material contained in or suggested by the Practice.

This Practice is subject to revision at any time by the responsible Function Team and will be reviewed every 5 years. This Practice will be revised, reaffirmed, or withdrawn. Information on whether this Practice has been revised may be found at www.pip.org.

© Process Industry Practices (PIP), Construction Industry Institute, The University of Texas at Austin, 3925 West Braker Lane (R4500), Austin, Texas 78759. PIP member companies and subscribers may copy this Practice for their internal use. Changes, overlays, addenda, or modifications of any kind are not permitted within any PIP Practice without the express written authorization of PIP.

PIP will not consider requests for interpretations (inquiries) for this Practice.

Not printed with St ate funds

ASSOC. PIP: ELCGL01

DATA SHEET FOR ELECTRICAL DESIGN CRITERIA

ELCGLO1D PAGE 1 OF 8 November 2002

Client: Project Title: Project Location: Project No.:

Engineering Org.: Location: Contract No.: Specifier Name:

Specification No.: Date: Equipment No.: Telephone No.: Purchaser Order No.:

Refer to PIP ELCGL01 for General Requirements. 3. System Design Criteria 3.2 Other Applicable Codes:

3.3 System Studies ! Load Flow ! Short Circuit ! Motor Starting ! Harmonic ! Transient Stability ! Underground Cable Thermal ! Ground Grid ! Load Summary ! Device Coordination Software: ___________________________________________________________________________________

3.4 Utility Interface Parameters Max. Voltage: _________________ Min. Voltage: _________________ Frequency: _________________ Max. Short Circuit MVA 3-Phase: ________ Min. Short Circuit MVA 3-Phase: ________ X/R: ______ Max Short Circuit MVA L-G: ________ Min. Short Circuit MVA L-G: ________ X/R: ______

3.5 Three-Phase System Voltage Parameters Bus Voltage Transformer Secondary Connection ! 13800 ! Wye ! Delta

!

12470

! !

Wye Delta

Grounding Method ! Solid ! Low Resistance ! High Resistance ! ! !

!

7200

! !

Wye Delta

! ! !

!

4160

! !

Wye Delta

! ! !

!

2400

! !

Wye Delta

! ! !

!

480

! !

Wye Delta

! ! !

!

120/208

!

120/240

Other Voltages ! ________

!

Wye

1-Phase ! !

1-Phase 3-Phase

!

Wye Delta

_________ through _________

Solid Low Resistance High Resistance

_________ through _________


_________ through _________


_________ through _________


_________ through _________

Solid High Resistance Ungrounded

_________ through _________

Solid Solid

!

Motor Horsepower Range

! ! ! !

Solid Low Resistance High Resistance Ungrounded

Less than ___________ hp

_______ through _________

ASSOC. PIP: ELCGL01



3.7 Motor-Starting Voltage Drop ! Required ! Not Required 3.7.2 Acceleration Study ! >600 Volts and ≤5000 Volts Motor-Rated Voltage Required System Starting Voltage at Bus: ! 90% ! ________% 3.7.3 ≤600 Volts ! 85% ! ________% 3.7.6 >600 Volts and ≤5000 Volts >5000 Volts ! 85% ! ________% Motor-Rated Voltage Required System-Starting Voltage at Motor Terminals: ! 80% ! ________% 3.7.7 >600 Volts and ≤5000 Volts >5000 Volts ! 80% ! ________% ! Soft Start ! Other ______ 3.7.5 ≤600-Volt Reduced Voltage Starting Method ! Captive Xfmr ! Soft Start ! Auto-Transformer 3.7.8 >600-Volt Reduced Voltage Starting Method

3.8 Design Allowance Feeder Cable Ampacity 3.8.1 Spare Capacity Transformer Capacity Above NEC Requirements Switchgear Bus Ampacity MCC Bus Ampacity MV Starters 3.8.2 Spare Devices MV Switchgear Circuit Breaker or Fused Switches Low-Voltage Switchgear Circuit Breakers Low-Voltage Starters (per MCC) 3.8.3 Equipped Spaces

Unequipped Spaces

3.8.4 Future Unit Spaces

MV Starters (per Line-up) Low-Voltage Switchgear Circuit Breakers MV Switchgear Circuit Breakers MV Starters (per Line-up) Low-Voltage Switchgear Circuit Breakers MV Switchgear Circuit Breakers or Fused Switches Low-Voltage Starters (per MCC)

! !

20% 20%

! !

Electrical Equipment Rooms 2 or more doors ! No Locks !

4.

Area Classification

4.1 4.2

" "

Per PIP ELEHA01 Division Method

" "

! !

!

>5000 Volts

Other ___________

_______% _______%

20% ! _______% 20% ! _______% _______ ! 2 Per Line-up _______ ! 2 Per Line-up ! !

_______ ! 2 Per Line-up Size 1 ________ Size 4 ________

2 Per Sub 2 Per Sub

!

!

!

2 Total Project 2 Total Project

!

2 Per Sub

!

2 Total Project

!

Size 2 ________ Size 5 ________

Size 3 _________ Size 6 __________

Feeder Breakers: _________ Fused Switches: _________ ______ ! 2 Per Line-up ! 2 Per Bldg ! 2 Total Project ______ ! 2 Per Line-up

!

2 Per Bldg

!

2 Total Project

______ ! 2 Per Line-up

!

2 Per Bldg

!

2 Total Project

______ ! 2 Per Line-up ______ ! 2 Per Line-up

!

2 Per Bldg 2 Per Bldg

!

!

!

2 Total Project 2 Total Project

______ ! 2 Per Line-up

!

2 Per Bldg

!

2 Total Project

Size 1 _________ Size 2 _________ Size 3 ___________ Size 4 _________ Size 5 _________ Size 6 _____________ Feeder Breakers _________ Fused Switches _________

3.9 Pow er Factor Power Factor Correction Required: ! No ! Yes Minimum System Power Factor ______% or ! Other _______________ ! At Utility Interface Method(s) of Power Factor Correction: ! Capacitors ! On Major Power Bus ! On MCC Bus ! At Motor ! Fixed ! Other_________________________________________________________

3.11 3.11.1 3.11.3

!

1 Door if Allowable per NEC Locks with “Night Latch” Feature

Other_______________ Zone Method

! !

Other ______ Other ______

!

Switched

ASSOC. PIP: ELCGL01



5. Power Distribution 5.1 System Configuration System ! Simple Radial ! Expanded ! Primary ! Primary Loop Configuration System Radial System Selective System Arrangements System Document Number ________________________________ ! One Line Attached

5.2 Utility Interface and Unit Substations 5.2.3 Primary or Utility Interface Substation ! Outdoor ! Open Bus ! ! Indoor ! Prefabricated Power ! Center HVAC Required ! Yes ! Elevation ! At Grade ! Unit Substations ! Outdoor ! NEMA 3R Walk-in ! ! Indoor ! Prefabricated Power ! Center HVAC Required ! Yes ! Pressurized ! Yes ! Elevation ! At Grade ! 5.2.4 Single-Ended Substation Expansion ! One Direction ! Two Directions 5.2.5 Future Conversion of Single-Ended to Double-Ended Substation ! Required ! Not Required 5.2.6 Double-Ended Substation Expansion ! One Direction ! Two Directions

5.3 Transformers 5.3.1 Power Transformers ! Liquid Filled ! Dry Type ! Cast Coil 5.3.2 Transformer Size Based On 0 ! 65 C Rise 5.3.4 ! Liquid Type: _________ 5.3.5 Power Transformer Location 5.3.5 Outdoor Transformer Spec 5.3.5 Indoor Transformer Spec

!

Indoor Indoor Indoor

!

55 C Rise

! !

! ! !

NEMA 3R Walk-in Fabricated in Place Building

5.3.6 Control Power and Lighting Transformers 5.3.7 Outdoor Control Power and Lighting Transformers

Secondary Selective System

NEMA 3R Non-Walk-in Pressurization Required ! Yes ! No No Internal Temperature Range _______________ Elevated ________ Feet NEMA 3R Non-Walk-in Fabricated ! NEMA 3R ! NEMA 3R Non-Walk-in Building Walk-in No Internal Temperature Range _______________ No Elevated ________ Feet !

None Required

Number of Sections ______

!

None Required

!

Outdoor Outdoor Outdoor

!

Other _________

!

! ! ! ! !

!

Number of Sections ______

!

0

Outdoor PIP ELSTR01 PIP ELSTR03

!

Other _________ PIP ELSTR04 Other _________ 0

0

80 C / 220 C Epoxy-Encapsulated

!

Other __________

!

Other __________ Other __________

!

5.4 Metering, Monitoring, and Relaying 5.4.1 Metering " Voltmeter " Ammeter " Power Factor Meter " Watt-Hour Meter " kW Demand Meter " Microprocessor-Based " Other _____________ " Analog Meters with " Individual Phase Analog Meters Multifunction Metering Selector Switches 5.4.2 Communications Type: " None " RS232 " RS422 " RS485 " Other_____ Devices Monitored: " Circuit Breaker Protective Relays " Circuit Breaker " Multifunction Metering " Other_____ Trip Units Devices 5.4.3 Relay Selection " Microprocessor-Based Relay(s) " Solid State Relays " Electro-Mechanical Relays

ASSOC. PIP: ELCGL01



5.5

Sw itchgear

5.5.1 Low-Voltage Switchgear 5.5.2 Medium-Voltage Switchgear 5.5.3 Control Voltage

5.6

5.7 " "

6.

Metal-Enclosed Drawout (PIP ELSSG01) " Metal-Clad " Metal-Enclosed (PIP ELSSG02 ) (PIP ELSSG03) LV Metal-Enclosed " 125 VDC Trip " 125 VDC Close MV Metal-Clad " 125 VDC Trip " 125 VDC Close MV Metal-Enclosed " 125 VDC Trip " 125 VDC Close "

Switchgear / Substation Batteries

Switchgear Rooms Power Center per PIP ELSSG11 Built-in-Place Block Walls

Motors

"

"

" "

"

MCCB Panelboard " Metal-Enclosed (PIP ELSSG03) for Transformer Main Only " Captrip Trip " AC Close " Captrip Trip " AC Close " Captrip Trip " AC Close

NEMA 3R Walk-in per PIP ELSSG12 Other ______________

Installed per PIP ELIMT000

!

Flooded-Cell Lead-Acid per PIP ELSAP11

"

"

Other _______________

Built-in-Place Metal Walls

Other _______________

7. 7.2 7.2.1

Motor Control 480-Volt Motor Control " Fused Disconnect Switch " Molded-Case Circuit " Motor Circuit Protector " Other _______ MCC Type (PIP ELSMC12) Breaker (PIP ELSMC13) (PIP ELSMC13) " NEMA 1 Gasketed " NEMA 12 7.2.2 MCC Indoor Enclosure Type " NEMA 3R " NEMA 4X " Other _________________ 7.2.4 MCC Outdoor Enclosure Type " Front Only " Back-to-Back 7.2.5 MCC Enclosure Arrangement " 20% Growth " Other _________________ 7.2.6 Indoor MCC Floor Space " NEMA 4X " NEMA 3R " Other _________________ 7.2.8 Outdoor Starters (Non-Classified) " Bolted " Threaded " Other _________________ 7.2.9 Explosion-Proof Starter Enclosures " Size 1 " Other _________________ 7.2.11 Minimum Starter Size " Electronic 7.2.12 Overload Protection " Eutectic Alloy " Class 10 " Class 20 " Class 30 " Bi-Metallic " Class 10 " Class 20 " Class 30

7.3 Low-Voltage Adjustable Speed Drives

"

Per PIP ELSMC20

"

Other_____________________________

7.4 Medium-Voltage Motor Control 7.4.1 For 2.3-kV Motors: Circuit Breaker Used as Motor Starter at _______ hp and above For 4-kV Motors: Circuit Breaker Used as Motor Starter at _______ hp and above 7.4.2 " Drawout (Roll-out) Contactor " Stationary (Bolt-in) Contactor 7.4.4 " Medium-Voltage Starters per PIP ELSMC11 " Other _____________________ 7.4.5 " Medium-Voltage Adjustable Speed Drive per PIP ELSMC21 " Other _____________________ 7.4.6 Microprocessor-Based Motor Protection Relay Type _________________ 7.4.7 " Differential Protection ≥ 1500 hp " Differential Protection ≥ _____ hp

ASSOC. PIP: ELCGL01



8. Grounding 8.1 Ground Grid Conductor " Bare " Covered 8.2 System Grounding (Also See 3.5) 8.2.2 " 480-Volt Wye per PIP ELSGS01 " 480-Volt Delta per PIP ELSGS02 8.2.3 " Low Resistance - XFMR Wye Neutral Resistor per PIP ELSGS11 High Resistance per the Following: " 2400-Volt Wye per PIP ELSGS03 " 2400-Volt Delta per PIP ELSGS04 " 4160-Volt Wye per PIP ELSGS05 " 4160-Volt Delta per PIP ELSGS06 " XFMR Wye Neutral Resistor per 8.2.4 Distribution System Grounding PIP ELSGS11 Method "

Zig-Zag Transformer

Secondary: ! Visible Ground Conductor to Ground Grid or Grounded Steel Structure ! Use Raceways and Cable Tray ! None

8.3.2 Medium-Voltage Motor Supplemental Grounding " Adjacent Building or Structure Steel " Reinforcing Mesh or Bars in the Concrete Foundation ! Bare Copper Conductor ! Uninsulated Tin-Coated Copper Conductor

"

!

8.3.3 460-Volt Motor Supplemental Grounding " Adjacent Building or Structure Steel " Reinforcing Mesh or Bars in the Concrete Foundation ! Bare Copper Conductor ! Uninsulated Tin-Coated Copper Conductor

"

"

Other___________________

8.3 Equipment Grounding 8.3.1 Equipment Grounding Primary: ! Equipment Grounding Conductor Run with Power Wiring ! Use Raceways and Cable Tray ! Any Method Permitted by NEC

8.4 Plant Grounding 8.4.1 Plant Grounding System " Effectively Grounded Metal Structure " Ground Loop

"

Other _______________ Low Resistance Other ______________

"

!

Adequately Sized Bare or Green-Colored, Covered Copper Conductor around the Equipment Foundation and Connected to at Least Two Ground Rods or Ground Grid Covered Copper Conductor

Not Required ! Required " Adequately Sized Bare or Green-Colored, Covered Copper Conductor around the Equipment Foundation and Connected to at Least Two Ground Rods or Ground Grid ! Covered Copper Conductor

Driven Electrode System

"

Concrete-Encased Electrode System

"

No. 4/0

8.4.5 Ground Loop Conductor " " "

No. 2/0 Bare Insulated Driven Rods

Ground Electrodes " Connections to Ground Loop Ground Conductor Minimum Depth (below Surface) 8.4.7

"

Bare Underground Cables Shall Be Tin-Coated.

" "

XHHW Rebar

"

Other _______________

"

"

"

"

Other _______________ Other _______________ Exothermic

THW Buried Plate " Compression _____________ Inches

"

ASSOC. PIP: ELCGL01



9. 9.1

Lighting Illumination Level

!

Per API RP540

!

Other __________

9.2 Luminaires and Circuits Luminaire Type 9.2.1 Areas

Voltage Rating

General Building / Office

!

! ! !

Shops, Warehouse, etc.

! ! !

Fluorescent Incandescent Metal Halide Fluorescent Metal Halide High-Pressure Sodium

! ! ! ! ! !

Floodlights, Roadway Lighting, Parking Lots, etc.

!

Outdoor Process

!

!

Metal Halide High-Pressure Sodium

! ! ! !

!

Metal Halide High-Pressure Sodium

! ! ! !

Indoor Process

! ! !

Fluorescent Metal Halide High-Pressure Sodium

! ! ! !

Control Room

! ! !

9.2.2 Photoelectric Cell Control

!

9.2.3 Standby

!

! ! !

! !

Astronomical Clock Other ____________________

!

120 208 277 480

! !

Per 9.2.4

!

Per 9.2.4 and Other __________

!

! !

Power Receptacles and Convenience Outlets Receptacles ! No Receptacles Allowed in Div. 1 Areas Max. Receptacle Distance from Equipment ! 50 feet ! Other ________ GFCI Protected Receptacle Locations – and – ! Other Locations:_____________________________ ! Per NEC

Type Voltage Phase 10.1.3 Convenience 120 1 Power 480 3 10.2.1 10.2.4 480-Volt Plug Type _______________________

11.

Photoelectric Cell Controlled Panels !

!

10. 10.1 10.1.1 10.1.4

Dedicated Photoelectric Cells

!

Incandescent Fluorescent High-Pressure Sodium Instant Restrike Battery

!

9.2.4 Emergency Lighting Locations

Fluorescent Incandescent Other __________________

120 208 277 120 208 277 480 120 208 277 480 120 208 277 480 120 208 277 480 120 208 277

Current Rating 15A (5-15R) ! Not Allowed !

! !

20A (5-20R) 30A

! !

30A (5-30R) 60A

! !

______ A ______ A

Wiring Methods

11.1 Cable Tray !

Aluminum

!

Hot-Dipped Galvanized Steel

!

Stainless Steel

! !

11.1.6 11.1.7

Spare Space in Tray Cable Tray Class Cable Tray Type Cable Tray Rung Spacing Cable Tray Covers " Required ! Separate Trays for Each Voltage Class

! " " " " !

Fiberglass (Polyester) Fiberglass (Vinyl-Ester)

20% ! 40% ! ____% 12C " 16C " 20C " _________________ Ladder " Trough " _________________ 6” " 9” " 12” " _________________ Not Required " Comments _______________________________ Other_____________

ASSOC. PIP: ELCGL01



11.2 Aboveground Conduit and Fittings 11.2.1 Acceptable Types of Conduit " Rigid Galvanized Steel (RGS) 11.2.1 Acceptable Conduit Sizes " 1/2” 11.2.9 Aboveground – Corrosive Areas

"

"

3/4” " 1” " 1-1/4” RGS " Rigid Aluminum

"

"

Rigid Aluminum

"

1-1/2” " 2” " 2-1/2” " PVC-Coated Steel

11.3 11.3.1 11.3.3 11.3.6 11.3.9

Underground Conduit and Duct Banks Duct Bank " Rigid Galvanized Steel Conduit " Schedule 40 PVC Conduit Acceptable Underground Conduit Sizes " 1” " 1-1/4” " 1-1/2” " 2” " 2-1/2” " 3” Minimum Depth (Below Surface) ____________________________ Spare " 20% " Other __________________

11.4 11.5 11.6

Direct Burial Overhead Pole Lines Messenger Cable

Not Allowed " Armored Cable Not Allowed " Open Wire Support Method __________________ "

"

"

"

12. Power and Control Wiring 12.3 Cable Construction Low-Voltage ! TC " THWN/PVC Cable " XHHW/PVC Composite Cable

" " " "

!

MC

THWN/CPE XHHW/CPE Acceptable Not Acceptable

THWN/PVC " THWN/CPE XHHW/PVC " XHHW/CPE " Continuous Corrugated Aluminum Composite Cable " Acceptable " Not Acceptable " "

ASD Motor Feeder Cable !

1/C

Medium-Voltage Power Cable 3/C

"

THWN

"

Copper Conductors

"

XLPE/PVC EPR/PVC Armored

"

XLPE/PVC EPR/PVC

"

" "

1/C

" "

12.5 Multiconductor Minimum Size 12.6 Composite Power/Control Cable

12.8 Power Cable Termination Methods 600-V Cable " Not Specified 5-kV Cable " Tape 15-kV Cable " Tape

"

XHHW

THWN/CSPE XHHW/CSPE Max Conductor " "

EMT (See Section 11.2.2) 3” PVC

" "

"

4”

"

4”

"

5”

THWN/CSPE " _______________ XHHW/CSPE Ground Wires " Req’d " Not Req’d " Interlocked Aluminum " Interlocked Galvanized Steel Max Conductor " No. 4 " No. 2 " ______________ " "

!

MC Required

!

MC Not Required

"

RHW

"

_______________

"

Aluminum Conductors

XLPE/CPE EPR/CPE

"

Other _______________

"

XLPE/CSPE EPR/CSPE

"

"

"

No. 14

"

No. 16

"

Other _______________

"

Allowed

"

Tape Cold Shrink Cold Shrink

" "

6”

" _______________ Ground Wires " Req’d " Not Req’d " No. 4 " No. 2 " ______________

"

"

"

Non-Armored Cable Messenger

XLPE/CPE EPR/CPE Galvanized Steel

"

5” " 6” Fiberglass

" "

XLPE/CSPE EPR/CSPE " Aluminum "

"

" Other _______________ Ground Wires: " Req’d " Not Req’d

Not Allowed

" " "

Reusable Boot Heat Shrink Heat Shrink

" " "

Other _______________ Other _______________ Other _______________

ASSOC. PIP: ELCGL01



14. Freeze Protection and Process Heat-Tracing Systems Process Heaters 120 V ≤ 1.8 kW 480 V > 1.8 kW Electric Heat Tracing

Types Allowed Self-Limiting Cable

Voltage ! 120 V ! 208 V ! 240 V

Constant Wattage Cable

! ! !

Mineral Insulated Cable

! ! ! ! !

Impedance Heating

! !

Control Types Allowed

Ground Fault Protection

16.

!

1-Phase 1-Phase

!

3-Phase

Sheath Required ! Tinned Copper ! Stainless Steel ! _________

120 V 208 V 240 V

!

Tinned Copper Stainless Steel ! _________

120 V 208 V 240 V 277 V 480 V

!

!

Outer Jacket Required ! Fluoropolymer ! Thermoplastic Rubber ! None ! _____________ ! Fluoropolymer ! Thermoplastic Rubber ! None ! _____________

Copper Stainless Steel ! Inconel ! Other _________ !

480 V ________ !

Microprocessor-Based System

!

!

Mechanical Thermostats ! Electronic Controllers Upper Temperature Limit Required None ! Third-Wire Monitor Circuit End Lights ! Current Indication

!

Current Flow Detection Other ___________________

!

EPD Breaker

!

____________________

! !

Continuity Monitoring

!

!

!

Integral in Controller

Uninterruptible / Standby Power

16.1 Critical Power Supply Requirements: ________________________________________________________________________ UPS Required ! No 16.2 ! Yes ! PWM ! Ferroresonant ! Other _________________________ o o Battery-Operating Time @ 25 C (77 F) _________ Minutes Battery Type: ! Flooded Cell per PIP ELSAP15 ! Valve Regulated per PIP ELSAP16 Generator Required ! Yes ! No 16.3 Alternate Utility/Plant Feeder: ! Yes ! No

17. Skid-Mounted or Packaged Equipment ! Other ___________________ ! Per PIP ELSPS01

Other Requirements:

ELCGL01D

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