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For such systems, the DC voltage is related to the AC voltage under no load conditions as follows: However, if you are simulating a DC system that connects to an AC system through a Rectifier or Inverter, then the proper DC voltage (that works in line with Rectifier and Inverter equations) needs to be specified. If the system you are defining is completely DC with nothing but DC sources, then defining the bus base voltage can be done by finding the rated DC voltage on the gear you are simulating, and then enter it for the bus. On DC buses, the base kV defined is not LL nor is it LG.
MINDUSTRY SPREADSHEET CODE
The information can be converted and printed as a QR code on arc flash labels. Any line style can be selected from the box to represent an enclosure such as switchgear.ĭevice Code: You can type letters or numbers to describe the device code for the bus. One-line Graphics – Line Style: The box drawn around the bus symbol in the one-line. Specific reports can then be generated for this combination without including the entire pulp mill or the other digesters. You may want to define the pulp mill as Area 3 and the digester electrical equipment as Zone 2. This enables even more specific reporting. Zone: A zone number is simply a sub-area. Area numbers are positive integers between 1 and 999. For example, typical paper plant areas may be the power house (Area 1), caustic plant (Area 2), pulp mill (Area 3), and paper machine (Area 4). These areas can then be used for creating specific text reports from analysis operations that represent subsets of the system.
MINDUSTRY SPREADSHEET FREE
Options include flush, surface, or free standing.Īrea: Area numbers are used to uniquely define different areas of the electrical system. Mounting: The method by which the bus is mounted. The options include copper, aluminum, or other. Material: The material with which the bus is made. A low voltage bus has symmetrical kA units.
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A high voltage bus can have asymmetrical kA or peak kA (crest) units.The testing standard unit is specified on the right as follows: Rating (A): Continuous current rating of the bus in amperes.īracing (kA): Short circuit rating of bus bracing in kA. Network Protector: Spot or grid network protectors used in network distribution systems.Junction Box – Small: Small or shallow junction box.Junction Box – Large: Large or deep junction box.Control Panel: Enclosure for control circuits.Padmount Equipment: Padmount switches, padmount transformers cabinets, and so on.Vault: Underground space such as manhole for cable connections, transformers, and so on.Transformer Terminal: Enclosure transformer terminals/bushings.VFD: Variable frequency drive or some type of motor drive.Int Switch: Interrupting or disconnect or safety switch.For low voltage control circuits this type can be used. NEMA E2 Contactor: NEMA E2 motor starter enclosures.Switchboard: This can be a low voltage or high voltage switchboard.Panelboard: Low voltage power panelboards.Conductor: Wire ways, bus ways, and so on.Switchgear: This can be low voltage or high voltage switchgear.In arc flash hazard calculations, the parameters affected by type are the gap between conductors and the distance exponent. The bus type definition is important for auto-design and arc flash hazard calculations. Specificationsīus Type: Type of equipment inside which the bus exists. This information is for reference in certain specific configurations of EasyPower and is not generally visible. Upstream Rating: The minimum amp rating of equipment that is upstream from the bus (such as breakers, transformers, or cables). Lock Auto Sizing: When this check box is selected, the bus cannot be auto-sized. MCCs and Panel Schedules can only be connected to low voltage buses. Anything less than 1 kV is considered low voltage, anything 1 kV or more is high voltage. Note that the bus must have a kV entered before equipment can be connected to the bus. The names default to BUS-1, BUS-2, BUS-3, and so on as you enter new buses on the one-line diagram, but you can change those names later if needed.īase kV: Base kV for the bus. This ID name is sometimes referred to as the bus name, and can be up to 16 characters long.
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This dialog box includes the following areas and tabs:įigure 1: Bus Data Dialog Box Connection Information You are here: Database Technical Reference > Bus Data Bus Data