Displaying Equipment Connected in Parallel - Intergraph Smart Electrical - Help - Hexagon

Intergraph Smart Electrical Help

Language
English
Product
Intergraph Smart Electrical
Search by Category
Help
Smart Electrical Version
10

Single line diagrams display parallel connections that have been made among various equipment items. In order for the software to display parallel connections appropriately, make sure that you have connected the required equipment in parallel. For details on how to make parallel connections, see Set Parallel Equipment Display Options.

  • If you are using customized symbols for cables and disconnect equipment, make sure that you have prepared two symbols for these item types: one for the regular (vertical) display (for example, MY_CABLE.SYM) and one for the horizontal display (for example, MY_CABLE_PRL.SYM). You can, however, use the shipped symbols as you require.

  • The software displays parallel connectivity even if there are no cables between the parallel equipment items.

Placement of Items

The general rule for placing electrical items in an SLD is determined by the power flow of the electrical items in a given SLD. For the items in a parallel branch, the placement rule is determined according to the sequence of items in the Parallel Equipment Assistant. For example, if in the Parallel Equipment Assistant, you defined Motor_1 in the Item 1 column and Motor_2 in the Item 2 column, the software will place Motor_1 to the left of Motor_2. However, if there is an overlap in the placement of items on the drawing due to the parallel connection definitions, the power flow rule overrides the rule determined by the Parallel Equipment Assistant. The software will first place the items based the power flow and then arrange the items in the parallel branches in accordance with the definitions made in the Parallel Equipment Assistant.

For manual SLDs, after placing an item that has been included in a parallel chain in the Parallel Equipment Assistant, the software also automatically places all the items that have parallel connection associations with the item you just placed.

These rules are illustrated in the following examples.

Example A:

Two variable speed drives connected in parallel.

  • In the Parallel Equipment Assistant:

    Item 1

    Item 2

    V-1G-2

    V-1G-3

  • In Electrical Engineer:

2VSD-Tree

  • In a generated SLD:

2VSD-P

Example B:

Two motors with a maintenance switch connected in parallel.

  • In the Parallel Equipment Assistant:

    Item 1

    Item 2

    M1A

    M1B

  • In Electrical Engineer:

2MOTORS-P-EE

  • In a generated SLD:

2MOTORS-P

Example C:

Two transformers connected in parallel.

  • In the Parallel Equipment Assistant:

    Item 1

    Item 2

    T-1A

    T-1B

  • In Electrical Engineer:

2TRANSFORMERS-P-EE

  • In a generated SLD:

2TRANSFORMERS-P

Example D:

Three motors connected in parallel. The SLD is based on a single power source.

  • In the Parallel Equipment Assistant:

    Item 1

    Item 2

    MTR-1A

    MTR-1B

    MTR-1B

    MTR-1C

  • In Electrical Engineer (the SLD is based on a single power source):

3_motors_1_power_source_EE

  • In a generated SLD:

3_motors_1_power_source_SLD

Example E:

Three motors connected in parallel. The SLD is based on two power sources.

  • In the Parallel Equipment Assistant:

    Item 1

    Item 2

    MTR-1A

    MTR-1B

    MTR-1B

    MTR-1C

  • In Electrical Engineer (the SLD is based on two power sources):

3_motors_2_power_source_EE

  • In a generated SLD:

3_motors_2_power_source_SLD

SHARED Tip To define the display settings, such as the vertical and horizontal distance between the equipment items, see Set Parallel Equipment Display Options