1-3-3.SAF-T-BAR T型電軌(T SERIES CONDUCTOR)

商品名稱:

1-3-3.SAF-T-BAR T型電軌(T SERIES CONDUCTOR)

詳細介紹:

1.C&W電軌系統(SAF-T-BAR)新目錄                                                                        
       1-1.SAF-T-BAR C型電軌(C SERIES CONDUCTOR)                                               下載down load1-1.SAF-T-BAR C型電軌(C SERIES CONDUCTOR) 
       1-2.SAF-T-BAR H型電軌(H SERIES CONDUCTOR)                                               下載down load1-2.SAF-T-BAR H型電軌(H SERIES CONDUCTOR)

       1-3.SAF-T-BAR T型電軌(T SERIES CONDUCTOR)                                                下載down load1-3.SAF-T-BAR T型電軌(T SERIES CONDUCTOR)

       1-4.INSUL-8 8字型電軌(INSUL-8 CONDUCTOR)                                                  下載down load1-4.INSUL-8 8字型電軌(INSUL-8 CONDUCTOR)

       1-5.INSUL-8側向8型電軌(INSUL-8 SIDE CONTACT CONDUCTOR BAR)              下載down load1-5.INSUL-8側向8型電軌(INSUL-8 SIDE CONTACT CONDUCTOR BAR)

       1-6.CLUSTER電軌CLUSTER BAR                                                                           下載down load 1-6.CLUSTER電軌CLUSTER BAR


System Components:

 

Conductor Bar: Selected to meet ampacity, voltage drop, duty cycle, environmental, and application requirements.

 

Rail Joints : Required for each connection, unless the joint is pre-mounted to the bar - Series C and Series T only.

 

Hanger/Anchor  Clamps: Must be installed at the spacing specified in this catalog. Anchor points must be determined and set according to the expansion of the system. Hangers must be installed at least 6"(152 mm) from any rail joint or power feed to allow for adequate system expansion.

 

Support  Arms: Support arms are required at each hanger clamp location and must be of sufficient strength to ensure safe suspension of the conductor bar system.

 

Power Feeds: The ideal location for a single power feed is the center point of the system to yield the minimum voltage drop. A minimum of one power feed is required per pole.

 

Expansion  Sections:  Expansion sections are required for installations beyond certain total system lengths - See Pg. 65.

 

End Caps: End caps are required to insulate the system at the rail ends.

 

Collectors:  Collectors must be selected to meet the amperage requirements of crane/machine and the related duty cycle of the application.

 

Collector  Towing  Arm: Is required for each set of current collectors and is required to tow the collector assembly.

 

National Electric Code Ampacity Requirements

 

  1. For one motor, use 100% of motor nameplate full load ampere rating.

 

  1. For multiple motors on a single crane or hoist, the minimum circuit ampacity of the power supply conductors on a crane or hoist shall be the nameplate full load ampere rating of the largest motor or group of

motors for any single crane motion, plus 50% of the nameplate full load ampere rating of the next largest motor or group of motors.

 

  1. For multiple cranes and/or hoists supplied by a common conductor system, compute the motor minimum ampacity for each crane as in step (2), add them together and multiply the sum of the demand factor from the following table:

Number of cranes

Demand factor

2

.95

3

.91

4

.87

5

.84

6

.81

7

.78

 

  1. For constant loads such as magnets, lights, and air conditioners, etc., plus high duty cycles, use full load amperage, in selecting conductor size.

System Calculations

The Specification Data Sheets on pages 6-7 will help you

collect information about your application. Also, see Pgs. 83-88 for other considerations that will help you choose the correct conductor bar system for your application. Please also refer to your relevant local, state/provincial, and federal regulations to make sure that the correct material is selected. In the USA, refer to calculation  methods used in NEC 610-14(e).  For constant loads such as magnets, lights, and air conditioners, etc., plus high duty cycles, use full load amperages to select conductor size.

Once these values are determined, depending upon the ambient temperature, apply ampacity correction factors (as per table 610.14(A).

 

Voltage Drop Calculation - See also Pgs.

84 and 87.

 

As most motors are designed to operate with a 2.5% to 5% voltage drop, divide volts lost by line voltage to determine if a larger conductor or additional feed points are required.  See tables for values Z and R.

3 phase AC Volts lost = 1.73 x Z x Length in feet from feed x

Ampere load

1 phase AC Volts lost = 2 x Z x Length in feet from feed x

Ampere load

DV Volts lost = 2 x R x Length in feet from feed x Ampere load