ELV systems

Overview

Extra-low-voltage (ELV) systems are what guests and staff experience every day without noticing: the camera that keeps a corridor safe, the card reader on the door, the music in the lobby, the announcement during an emergency. On a typical project these systems come from different vendors and different trades. Unless someone owns the whole picture, they end up competing for the same risers, racks and network ports.

Megatrend treats ELV as a single engineered package. We plan shared infrastructure first, then place each system on it, so that integration and handover are straightforward.

Scope

• Security: CCTV surveillance and access control, including storage sizing and control room layout.
• Audio: public address and background music zoning for public and back-of-house areas.
• Guest and meeting room: IPTV, PBX telephony and audio-visual systems.
• Building interfaces: connection points to BMS, HVAC, lighting control and energy monitoring.
• Supporting infrastructure: cable trays, conduits, equipment racks, UPS, grounding and power distribution.

How we work

1. Survey and requirements: review the site, the drawings and the operator's standard for each system.
2. Integrated design: coordinate all ELV systems on common pathways and equipment rooms.
3. Supply and installation: deliver equipment and install it, or supervise the appointed contractor.
4. Testing and commissioning: test each system, then the interfaces between them, against agreed criteria.
5. Handover: provide as-built documents and train the operating team.