Fire Protection Engineering Chicago2018-11-13T08:15:36+00:00

Fire Protection Engineer in Chicago

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When you’re looking for a reliable Fire Sprinkler Systems Design Services in Chicago Illinois? The one to go to is New York Engineers. Not only for Fire Sprinkler Plumbing Design Experts but also Value Engineering and HVAC Chicago. Call (+1) 312 767.6877

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Fire Protection Engineering Salary

Nowadays if you solicit any contracting company or building management company form Forest Park Chicago to Prairie Avenue Historic District, about a affordable MEP Engineering in Chicago, the most popular answer is reach out to New York Engineers. What is so well known is that New York Engineers is probably your best bet for anyone looking for a fire protection engineering in Chicago. At NY Engineers our team has many years of experience designing fire protection and sprinkler systems from Niagara Falls to Peekskill, New York. Now, from our Chicago office we are helping general contractor and builders in Chicago design the fire protection and sprinkler systems they need.

The possibility of a building burnt down as a consequence of fire is actually a sight that no one wants to have. That is the reason why fire protection engineers are hired before a building or apartment is made. In case you are wondering who needs fire protection engineer, then your first name that you should know may be the architect from the building. Exactly like an architect is essential to make sure that the style of the construction is perfect and protected from all ends; a fire protection engineer makes sure that the building is safe from possible probability of fire.

Having immediate answer from your firefighting professionals is alright but wouldn’t it be great if the fire never happened? You need to consider “what if” rather than experiencing the dreadful experience of the building catching on fire. Fire protection engineers go through the model of the property first after which they ma the escape paths to be used during a fire. Also, they are responsible for connecting several fire protection things in and outside the structure. Water hosepipes connected to the main water tank, and checking the usefulness of the fire extinguishers are the duties that the fire protection engineer performs if they are hired.

Difference Between Chicago Fire Protection Engineers vs Tech

The Society of Fire Protection Engineers features a explicit concise explanation of Fire Protection Engineers vs Tech. The two positions call for a solid education in fire technology and skill as being a firefighter typically.

The engineers use principles to utilize methods and systems setups in a variety of buildings that really help protect folks and animals from injury during fires. Engineers analyze possibilities of where biggest fire threats lie and where to add protection like sprinklers. They ensure that the use of structures as well as any materials in them are meant to keep risks to a minimum.

Engineers will also oversee the fitting and upkeep of alarm systems, smoke detectors, and may carry out investigations of fires after one occurs. This helps them prevent such incidences from occurring in the foreseeable future.

This kind of status calls for scientific principles to assist improve the safety of individuals in homes and offices. A fire technician functions is to do the testing and repair of the systems that were arranged and presented from the engineers.

They would also get the highest education and firefighting experience to work in the field. They can also work to aid put in fire alarms and sprinkler systems nevertheless they usually do not create the design of those systems like the engineers do. There is only so much you can save this page if you would like more information on fire sprinkler system engineer services in Chicago by NY Engineers we invite you to visit at our Chicago Construction Administration blog.

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Ask an Electrical Engineering Professional: Are My Electric Motors Well Protected?

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Electric motors are normally out of sight, but they perform many important functions in residential, commercial and industrial buildings. Electric motors are used to drive air handlers, chillers, furnace blowers, water pumps and elevators, to name a few examples. For this reason, it is an important part of electrical engineering to keep them in optimal operating condition, and an important aspect of safe motor operation is providing them with reliable electrical protections.

Three-phase electric motors are normally used for mid- or large-sized equipment, and they are characterized by operating with three live conductors. These motors require specialized protections due to their connection. In smaller applications, such as fractional horsepower fans, single-phase electric motors are normally used.

These use either two live conductors, or a live conductor and a neutral conductor.

Motor faults are almost always disruptive because key equipment is taken out of operation. Also consider that electric motors are expensive, so it is in the best interest of property management companies to avoid replacements. In a few words, adequate motor protection pays off in the long run.

This article will provide an overview of the main electrical issues that threaten motors, and how to provide protection against them. If you are planning a major building renovation, it represents a good opportunity to upgrade motor equipment and improve electrical protection.

Protection Against Major Electrical Faults With Proper Electrical Engineering

Some faults cause the electrical current of a motor to increase drastically to many times its normal value. These faults must be disconnected immediately, or they cause irreversible damage to the motor, while being capable of starting a fire.  The electrical current can reach extremely high values under the following circumstances:

  • Contact between a live conductor and a neutral conductor.
  • Contact between a live conductor and a grounded surface or conductor.
  • Contact between two or more live conductors.

These faults cause what is called a short circuit in electrical engineering: a low-resistance connection between two points at different voltage values, which causes an extremely high current – often with magnitude in the thousands of amperes.

Motor protections use a magnetic tripping mechanism to clear these dangerous faults. The short circuit current induces a strong magnetic field through an electromagnet, which in turn forces a contact to open, disconnecting the motor from its power supply.

Electric motors draw a high inrush current when they start, which can reach values up to 800% of the motor’s rated current. This is normal behaviour and it only lasts for brief moments while the motor starts rotating, so it does not count as a fault. Motor protections must be sized to allow the inrush current, while clearing anything higher.

Protection Against Motor Overload

An overload is a less drastic type of fault where the motor is drawing current above its rated value, but only by a slight margin. However, overloads cause electric motors to heat up excessively, which shortens their service life.

Unlike short circuit protection, which is instantaneous, overload protection has a built-in time delay. This allows short-duration currents above the rated value that are normal in some types of equipment, such as the inrush current when a motor starts. In fact, if the motor fails to start for any reason, such as an obstacle locking the shaft or excessive load, the overload protection activates and disconnects the motor.

Overload protection acts faster as the current magnitude increases, which means a current slightly above the rated value may take minutes to be cleared, while a drastic overcurrent may be cleared in seconds. Currents that are high enough to activate the short-circuit protection described in the previous section cause immediate disconnection.

Overload protection can be either thermal or electronic. When it is thermal, it is based on a contact that expands with heat: more current causes more heat, and more heat causes a quicker disconnection. On the other hand, electronic overload protection uses a programmed response with the same behavior as the thermal protection, and the current is measured to determine how fast the contact will open.

Protection Against Voltage Changes

Motors have a rated voltage value, but they normally tolerate a variation of 10% above and below this value. However, the operating voltage should be as close as possible to the rated value to ensure optimal performance. When the voltage supplied to a motor is too low or too high, it draws a higher current, which overheats its windings and shortens its service life.

There are special overvoltage and undervoltage relays that measure the voltage being supplied to the motor and disconnect the power supply if the voltage falls outside the acceptable range. These relays are often adjustable, so it is important to establish a reasonable voltage range:

  • A range that is too narrow above and below the rated voltage may result in unwanted motor disconnections, since even minor voltage variations result in disconnection.
  • However, a range that is too broad does not provide adequate protection because the voltage is allowed to change drastically.

Protection Against Phase Loss and Phase Imbalance

Single-phase motors shut down when one of their conductors is disconnected, even if the other remains, since there is no path for electric current. On the other hand, three-phase motors can continue operating with only two-phase conductors, but this is extremely demanding for the motor and shortens its service life. Keep in mind that interrupting the voltage to any phase conductor has the same effect as disconnecting the conductor – the motor is left with a voltage supply in only two of its three terminals.

A related issue is phase imbalance, which occurs when the voltage supplied to a three-phase motor varies drastically between phases. Phase imbalance causes the motor to produce more noise and heat, while decreasing its efficiency and service life. Ideally, phase imbalance should be kept below 2% for optimal motor performance.

Phase monitors are devices that track the phase voltages of a motor and can be integrated with a contactor to disconnect the motor in the event of excessive imbalance or phase loss.

Conclusion

Adequate motor protection can be considered an investment in electrical engineering, since it prevents damage to expensive equipment. It also makes building interiors safer, since electrical faults with the potential to start a fire are cleared before they have a chance to do so. By working with qualified electrical design engineers, you can make sure all your electrical motors are specified with reliable protections and installed according to the codes relevant to your area.

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