An essential ingredient for the proper operation of security systems is adequate Power Quality (PQ). For the average security dealer, your involvement in PQ may start at the receptacle into which you connect the equipment. The PQ on a site is usually beyond the realm of the alarm installer to measure, diagnose or correct.
PQ is the quality of the electric power supplied to electrical equipment. Poor PQ can result in mis-operation of the equipment. There are many ways in which a power feed can be of poor quality, so there is no single way to completely quantify the quality. However, the security industry has long been made aware of the importance of making an effort to verify the purity of the juice coming out of the receptacle.
PQ questions you should always ask:
1. Is the circuit I'm using properly grounded?
2. Is the Hot and Neutral properly labeled? (Black should be Hot, White should be Neutral.)
3. Do you know where the circuit breaker for the circuit powering your system is located?
4. Do you know what other equipment is sharing the breaker?
5. Is the circuit on a UPS or emergency generator, and if so, how quickly and cleanly does your circuit switch-
over in the event of a power failure?
6. What is the rating of the circuit breaker feeding your circuit?
7. Is the structure in which your system is installed subject to surges or sags? What is the typical line voltage? What are the typical high-and low-voltage readings?
8. Are there devices present in the structure that might be dumping noise or EMF onto the line voltage, or affecting your wiring between system elements?
Using good power supplies is the best defense against problems getting your systems online and minimizing those perplexing system aberrations that seem impossible to trace or correct. QP (Quality Power) equipment from ALTRONIX provides inherent protection for your customers systems such as line regulation/conditioning/filtering consistent voltage levels channel isolation and power supply status monitoring.
Electrical codes, fire regulations and prevailing professional standards all will influence the exact type of power supplies that will be required for a system. The ratings and features of the power supply, the type of wire used to connect your devices to the power supply, and where you locate the power supplies, all will contribute to the success or failure of your project.
Power to the Peripherals
Low power distribution is another essential element of system integration. Systems require safe, centralized and monitored low-voltage power grids to power surveillance, locking and annunciation systems. Banks of wall warts and non-current limited lines are no longer acceptable techniques for engineered building systems.
As electric locking and surveillance are becoming commonplace in the majority of building designs, the demand for sophisticated power distribution solutions has resulted in the introduction of numerous safe, efficient and economical power supply solutions for the system designer. Honeywell Power Products' HPD Series of power distribution modules convert one low-voltage power supply input into four or eight individually fused or PTC protected outputs.
Devices connected to these modules work off separate circuits, so the whole system is not brought down if one circuit encounters a problem. The Power Distribution Modules have a wide range of applications for access control, intrusion and video systems that require individually protected output circuits.
Protection from Breaking Glass
As part of a complete security solution, today's dealers are looking at glass protection as a viable option to specify on commercial bids. Intec's Blast Window Retention Anchor Systems offer a customized solution for each application and masonry substrate to provide maximum resistance to explosions.
CINTEC offers complete structural analysis and design services, turn-key solutions, as well as masonry repair and reinforcement anchors used for blast protection, seismic reinforcement, historic preservation and overall building strengthening.