ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Section 7. Electrical equipment of special installations Electrical installations for entertainment companies, clubs and sports facilities. Power equipment Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE) 7.2.39. Power supply for electric motors of fire pumps, smoke protection systems, fire alarm and fire extinguishing systems, and fire warnings should be provided via independent lines from substations, main switchboards or ASU. 7.2.40. The switching on of electric motors of fire pumps and smoke protection systems and fire automatics installations must be accompanied by automatic shutdown of electrical receivers of ventilation and air conditioning systems. Automatic shutdown of other power electrical equipment is allowed, with the exception of fire curtain motors, circulation pumps and elevators. 7.2.41. Fire pump motors should be started:
The start of electric motors of fire pumps must be controlled in the fire station premises by light and sound signals. 7.2.42. The electric drives of the stage mechanisms must be automatically turned off when the mechanisms reach their extreme positions. Electric drives of the mechanisms of stage lifts, fire curtains, lifting and lowering platforms and hoisting and transport devices (except for hoists) must have an emergency automatic shutdown of re-release and re-lift directly in the power circuit, after which the start of electric drives by manual or automatic control devices must be prevented. 7.2.43. If the number of stage lifts is more than ten, a control device should be provided on the stage mechanism console, and in its absence, on the assistant director's console, ensuring the simultaneous shutdown of all stage lifts. 7.2.44. For an emergency stop of all mechanisms serving the stage (stage, arena), disconnecting devices must be provided) located in at least two places from where the operation of these mechanisms is clearly visible. 7.2.45. Doors in the enclosures of the rotating part of the stage (stage), lifting and descending platforms of the stage and orchestra, spotlights, technological lifts must be equipped with locking devices that turn off the electric motors when the doors are opened and exclude the start of the mechanisms after closing the doors without additional actions (turning the key, pressing a button and etc.). 7.2.46. Mechanisms that, in addition to an electric drive, have a mechanical manual drive, must be equipped with a lock that turns off the electric drive when switching to manual control. 7.2.47. Contacts of devices and apparatuses designed to ensure safety must work to open the corresponding circuit in the event of a power failure of the coil of this device or apparatus. 7.2.48. The fire curtain must be equipped with interlocks that automatically turn off the electric motor when the traction cables are loosened and the curtain is lowered by gravity. The movement of the fire curtain must be accompanied by light and sound alarms on the stage board and in the fire station. 7.2.49. Control of smoke hatches must provide for the possibility of both simultaneous opening of all hatches and separate opening and closing of each hatch. It is allowed to provide for the closing of smoke hatches manually. Control of the winch of smoke hatches must be provided from the stage board, from the fire control room and the winch room. See other articles Section Rules for the installation of electrical installations (PUE). Read and write useful comments on this article. Latest news of science and technology, new electronics: The world's tallest astronomical observatory opened
04.05.2024 Controlling objects using air currents
04.05.2024 Purebred dogs get sick no more often than purebred dogs
03.05.2024
Other interesting news: ▪ Tommy Hilfiger Jacket with Integrated Solar Panels ▪ HDD shipments will fully recover only by the end of the year ▪ New series of SONY LCD monitors ▪ Phison PS5.0-E5026 PCIe 26 Drive News feed of science and technology, new electronics
Interesting materials of the Free Technical Library: ▪ section of the site The most important scientific discoveries. Article selection ▪ article What gets away with thieves, thieves are beaten for that. Popular expression ▪ article Why do we close our eyes when we sneeze? Detailed answer ▪ article Common oak. Legends, cultivation, methods of application ▪ article Symmetric multivibrator. Encyclopedia of radio electronics and electrical engineering
Leave your comment on this article: All languages of this page Home page | Library | Articles | Website map | Site Reviews www.diagram.com.ua |