Where is 277v used

Labels: Vac. No comments:. Newer Post Older Post Home. Subscribe to: Post Comments Atom. Popular Posts. There are two frequently used terms for types of DC-DC converters; non-isolated and isolated. What is PFC and why do I need it? Efficiency Calculations for Power Converters. More precisely, the efficien What does 1U, 2U or 3U mean?

Many rack-mounted power systems are specified as being 1U, 2U, 3U, etc. What does this mean? For electronic equipment racks e. Can I use a single-phase luminaire if I have 3-phase power supply? In a 3-phase supply you have the capability of using all three phases for loads such as motors, fans and other industrial equipment.

Since our luminaires operate on single phase, you can take advantage of a 3-phase supply using either one or two legs of the supply to provide either a single-phase line to neutral connection or a single-phase line to line connection.

The image below helps to demonstrate how you can use a single-phase power supply through a 3-phase power supply to power your luminaires configured using a line-to-neutral voltage and a line-to-line voltage. What is the importance of a stable power source and what are the detrimental results of brown outs, black outs, etc? A brown out is a low voltage condition when the voltage drops. It is important to consider having your power monitored in your facility. Monitoring your power quality and voltage variation allows corrective measures to be taken to improve the power quality.

Black outs are when power is turned off then on again, either momentarily or for prolonged periods of time. This could potentially be an issue. Re-striking HID lamps more than two times a day can also be detrimental to the driver. If blackouts are a frequent occurrence at your facility, consider contacting your utility to resolve the issue or consider installing an uninterrupted power supply [UPS] or generator system.

Are there any specific wiring instructions for LEDs? LED luminaires can be wired in the same way as our traditional HID luminaires, based on the Voltage required by the luminaire i. Some LED luminaires can accommodate multiple voltages, whereas others are voltage specific. The voltage range will be noted on the product label. Think of the electrical service either as the primary service the utility provides to a location but it can also be a service created with a transformer located inside of a commercial facility.

This is the most common electrical service in the US as it is the service used in the typical residential home. Line 1 and Line 2 are considered the hot wires in the service. The neutral is bonded to ground. The voltage from Line 1 to Line 2 is V and this is used for larger loads in a home like an electric hot water heater or air conditioner. If you look at your homes electrical panel these are the larger double pole breakers. The voltage from Line 1 or Line 2 to the Neutral is V and is used for smaller loads like lights and outlets.

This electric service is the most common electric service in the US at commercial properties. The V 3-phase is used to power larger loads and standard V is available for outlets.

The title of this service is a little redundant as this service is often referred to as a 3-phase Y This electric service is found in larger commercial and industrial facilities. The V 3-phase is used to power large loads like motors. The V is often used for lighting circuits and smaller loads.