Cattle on the Schilke Ranch in northwestern North Dakota, located on Bakken Shale. Photo: Jacki Schilke In the midst of the domestic energy boom, livestock on farms near oil-and-gas drilling operations nationwide have been quietly falling ...
Tags: Agriculture, Food
Eaton says it is working with local officials, utilities and businesses to help restore power in Calgary, Alta., and surrounding areas, where residents and businesses are still recovering from the effects of recent flooding in southern ...
Tags: Consumer Electronics, Electronics
A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. The circuit breaker is an absolutely essential device in the modern ...
Tags: Circuit Breakers, Voltage
The Indiana Department of Transportation (INDOT) has added a new facility for winter de-icing operations and salt storage in Wabash, IN. The new tension fabric building, which provides enough capacity to store 3,600 tons of salt, was custom ...
Tags: INDOT, Legacy Building Solutions, Industrial Equipment
Change a drab room into a dazzling one with a new overhead light fixture. Here's how to mount that new fixture correctly and safely using professional installation techniques. Even if you've never tackled an electrical project before, you ...
Tags: Ceiling Light
All circuit breakers have common features in their operation, although details vary substantially depending on the voltage class, current rating and type of the circuit breaker. The circuit breaker must detect a fault condition; in ...
Tags: Circuit Breaker, Electrical
Circuit breakers are rated both by the normal current that they are expected to carry, and the maximum short-circuit current that they can safely interrupt. Under short-circuit conditions, a current many times greater than normal can ...
Miniature low-voltage circuit breakers use air alone to extinguish the arc. Larger ratings have metal plates or non-metallic arc chutes to divide and cool the arc. Magnetic blowout coils or permanent magnets deflect the arc into the arc ...
Tags: Arc Interruption, Circuit Breaker
1. Breakers for protections against earth faults too small to trip an over-current device: Residual-current device (RCD, formerly known as a residual current circuit breaker) — detects current imbalance, but does not provide ...
Tags: Breakers, Electronics
Electrical power transmission networks are protected and controlled by high-voltage breakers. The definition of high voltage varies but in power transmission work is usually thought to be 72.5 kV or higher, according to a recent definition ...
Tags: Circuit Breakers, High-Voltage
Magnetic circuit breakers use a solenoid (electromagnet) whose pulling force increases with the current. Certain designs utilize electromagnetic forces in addition to those of the solenoid. The circuit breaker contacts are held closed by a ...
Medium-voltage circuit breakers rated between 1 and 72 kV may be assembled into metal-enclosed switchgear line ups for indoor use, or may be individual components installed outdoors in a substation. Air-break circuit breakers replaced ...
Tags: Circuit Breakers, Medium-Voltage
When supplying a branch circuit with more than one live conductor, each live conductor must be protected by a breaker pole. To ensure that all live conductors are interrupted when any pole trips, a "common trip" breaker must be used. These ...
Tags: Common Trip Breakers, Electrical
Low voltage (less than 1000 VAC) types are common in domestic, commercial and industrial application, and include: MCB (Miniature Circuit Breaker)—rated current not more than 100 A. Trip characteristics normally not adjustable. ...
Tags: Circuit Breakers, Electrical
LT switcher is a safety panel consisting of a number of disconnect-switches that turns on and off the motors, transformers or other electrical appliances. It can be regarded as a power source in the building and production houses, which ...