What tool is used to accomplish phasing of two transformers in parallel?

What tool is used to accomplish phasing of two transformers in parallel?

• A. Megger
• B. Multimeter
• C. Capacitor tester
• D. Ohmmeter

Answer: (B)

A multimeter is essential for phasing two transformers in parallel because it allows for the measurement of voltage, current, and resistance. When phasing transformers, it is critical to ensure that they are connected in the correct phase relationship. This is done by measuring the voltage across the transformers' secondary coils to verify that their phases match. If they are not correctly phased, connecting them in parallel can lead to circulating currents, which can cause damage to the transformers. The multimeter's ability to provide accurate readings of alternating current voltage makes it the ideal tool for this task. It can also be employed to check for open circuits or shorts between the windings, providing further assurance of correct installation before the transformers are connected to the load. Other tools, while useful for different applications, do not provide the necessary functionality for confirming phase relationships between transformers. For instance, a megger is typically used for insulation resistance testing, a capacitor tester is used for checking the capacitance of capacitors, and an ohmmeter measures resistance but is not suitable for working with AC systems directly as it doesn't account for phase angles or operate under live conditions.

A multimeter is essential for phasing two transformers in parallel because it allows for the measurement of voltage, current, and resistance. When phasing transformers, it is critical to ensure that they are connected in the correct phase relationship. This is done by measuring the voltage across the transformers' secondary coils to verify that their phases match. If they are not correctly phased, connecting them in parallel can lead to circulating currents, which can cause damage to the transformers.

The multimeter's ability to provide accurate readings of alternating current voltage makes it the ideal tool for this task. It can also be employed to check for open circuits or shorts between the windings, providing further assurance of correct installation before the transformers are connected to the load.

Other tools, while useful for different applications, do not provide the necessary functionality for confirming phase relationships between transformers. For instance, a megger is typically used for insulation resistance testing, a capacitor tester is used for checking the capacitance of capacitors, and an ohmmeter measures resistance but is not suitable for working with AC systems directly as it doesn't account for phase angles or operate under live conditions.