Transformer Magnetizing Inrush
Exercise 2-1. Presented by: Joven Era & Loree Kean Doromal. 

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Transformer Magnetizing Inrush
Exercise 2-1

Presented by: Joven Era & Loree Kean Doromal

List of Equipments. 1 Faultable Transformers 2 Mobile Workstation 3 AC Ammeter 4 AC Voltmeter 5 Power Supply 6 Connection Leads. 

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1 Faultable Transformers 2 Mobile Workstation 3 AC Ammeter 4 AC Voltmeter 5 Power Supply 6 Connection Leads

01. Faultable Transformers. A black electronic device with many colored buttons Description automatically generated. 

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A black electronic device with many colored buttons

Description automatically generated

Faultable Transformers. The Faultable Transformers consists of three single-phase power transformers installed in a full-height EMS module. Each transformer has multiple primary and secondary windings. Fault taps are wired to switches or banana jacks on the front panel for insertion of winding-to-earth5 and winding-to-winding faults via current-limiting resistors. A current sensor is provided to observe the waveform of the primary current on transformer magnetizing inrush.. 

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The Faultable Transformers consists of three single-phase power transformers installed in a full-height EMS module. Each transformer has multiple primary and secondary windings. Fault taps are wired to switches or banana jacks on the front panel for insertion of winding-to-earth5 and winding-to-winding faults via current-limiting resistors. A current sensor is provided to observe the waveform of the primary current on transformer magnetizing inrush.

02. Mobile Workstation. A metal cabinet with shelves Description automatically generated with medium confidence. 

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A metal cabinet with shelves

Description automatically generated with medium confidence

Mobile Workstation. The Mobile Workstation is a ready-for-use workstation that consists of two fully assembled modules: a Workstation mounted on a Mobile Storage Cabinet. Four rubber-tire swivel casters allow easy movement of the workstation in the laboratory classroom. The lower portion of the workstation serves as a storage cabinet with two hinged panels and a lock handle. Immediately above the storage cabinet is a pullout work surface with a scuff- and burn-resistant laminate finish. The upper portion of the workstation consists of three rows of compartments designed to house EMS modules. Two of these rows have full-height compartments while the other row has half-height compartments. Each row of full-height compartments can accommodate up to three full-size EMS modules or six half-size EMS modules, whereas the row of half-height compartments can accommodate up to three half-size EMS modules.. 

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The Mobile Workstation is a ready-for-use workstation that consists of two fully assembled modules: a Workstation mounted on a Mobile Storage Cabinet. Four rubber-tire swivel casters allow easy movement of the workstation in the laboratory classroom. The lower portion of the workstation serves as a storage cabinet with two hinged panels and a lock handle. Immediately above the storage cabinet is a pullout work surface with a scuff- and burn-resistant laminate finish. The upper portion of the workstation consists of three rows of compartments designed to house EMS modules. Two of these rows have full-height compartments while the other row has half-height compartments. Each row of full-height compartments can accommodate up to three full-size EMS modules or six half-size EMS modules, whereas the row of half-height compartments can accommodate up to three half-size EMS modules.

03. AC Ammeter. A close-up of a device Description automatically generated. 

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A close-up of a device

Description automatically generated

AC Ammeter. The AC Ammeter consists of three separate multi-range ac ammeters for simultaneous measurement of three-phase currents. Two of the three meters have identical ranges while the third instrument has one additional lower range. Connections are made through 4 mm color-coded jacks.. 

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The AC Ammeter consists of three separate multi-range ac ammeters for simultaneous measurement of three-phase currents. Two of the three meters have identical ranges while the third instrument has one additional lower range. Connections are made through 4 mm color-coded jacks.

04. AC Voltmeter. A close-up of a device Description automatically generated. 

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AC Voltmeter. The AC Voltmeter module is fitted with three separate multi-range ac voltmeters for simultaneous measurement of three-phase voltages. Meter ranges and scalar values of each instrument have been carefully selected for compatibility and are appropriate for the electrical values to be measured. All meter readings are direct indications and do not require the indicated value to be mentally multiplied by a constant. All meters are diode-protected against burnout, should the students miswire a meter by range or function. This permits the greatest latitude of student involvement without fear of damaging equipment. All meters are terminated by 4 mm color-coded safety sockets.. 

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The AC Voltmeter module is fitted with three separate multi-range ac voltmeters for simultaneous measurement of three-phase voltages. Meter ranges and scalar values of each instrument have been carefully selected for compatibility and are appropriate for the electrical values to be measured. All meter readings are direct indications and do not require the indicated value to be mentally multiplied by a constant.

All meters are diode-protected against burnout, should the students miswire a meter by range or function. This permits the greatest latitude of student involvement without fear of damaging equipment. All meters are terminated by 4 mm color-coded safety sockets.

05. Power Supply. A close-up of a black device Description automatically generated. 

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A close-up of a black device

Description automatically generated

Power Supply. The Power Supply module is the primary component of the system. All associated equipment is powered by this power supply. A flexible, 5-wire power cord, terminated with a 5-prong, twist-lock plug and line cap, feeds the module. A mechanical interlock on the line cap prevents the removal of an energized Power Supply from its locked position in the workstation. The Power Supply requires a 3-phase, wye-connected, 5-wire service installation including ground and neutral. The Power Supply provides fixed and variable ac and dc voltage sources all terminated with 4 mm safety jacks. They can be used simultaneously, up to a total load current equal to the rating of the fixed 3-phase output. Independent circuit breakers, reset at the front panel, protect the Power Supply input and outputs. Indicator lamps monitor the presence of input voltage in each phase. When a phase leg of the site power service is out, the lamp goes off to reflect this condition. A voltmeter, connected through a selector switch, monitors the outputs. The Variable Power Supply is available in different variants depending on ac power network voltages and frequencies. Because of this, the actual module may vary from the one shown in the picture.. 

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The Power Supply module is the primary component of the system. All associated equipment is powered by this power supply. A flexible, 5-wire power cord, terminated with a 5-prong, twist-lock plug and line cap, feeds the module. A mechanical interlock on the line cap prevents the removal of an energized Power Supply from its locked position in the workstation. The Power Supply requires a 3-phase, wye-connected, 5-wire service installation including ground and neutral.

The Power Supply provides fixed and variable ac and dc voltage sources all terminated with 4 mm safety jacks. They can be used simultaneously, up to a total load current equal to the rating of the fixed 3-phase output. Independent circuit breakers, reset at the front panel, protect the Power Supply input and outputs. Indicator lamps monitor the presence of input voltage in each phase. When a phase leg of the site power service is out, the lamp goes off to reflect this condition. A voltmeter, connected through a selector switch, monitors the outputs.

The Variable Power Supply is available in different variants depending on ac power network voltages and frequencies. Because of this, the actual module may vary from the one shown in the picture.

06. Connection Leads. A group of colorful wires Description automatically generated. 

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A group of colorful wires

Description automatically generated

Connection Leads. Connection leads, commonly known as cables or wires, serve the crucial role of linking various electronic or electrical devices. These cables come in different types, such as power leads for transmitting electrical power, data cables for digital data transfer, audio cables for conveying sound signals, and video cables for transmitting visual signals. Additionally, connector types vary, including USB, Thunderbolt, RJ45, XLR, and more, each suited for specific applications. The length and gauge of the cable, as well as shielding against interference, are factors to consider when selecting the appropriate connection leads for a given setup. Ultimately, the choice of connection leads depends on the devices being connected and the nature of the signal or power transmission required.. 

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Connection leads, commonly known as cables or wires, serve the crucial role of linking various electronic or electrical devices. These cables come in different types, such as power leads for transmitting electrical power, data cables for digital data transfer, audio cables for conveying sound signals, and video cables for transmitting visual signals. Additionally, connector types vary, including USB, Thunderbolt, RJ45, XLR, and more, each suited for specific applications. The length and gauge of the cable, as well as shielding against interference, are factors to consider when selecting the appropriate connection leads for a given setup. Ultimately, the choice of connection leads depends on the devices being connected and the nature of the signal or power transmission required.

Transformer Magnetizing Inrush Exercise 2-1