Uninterruptible Power Supplies - Electrical Installation

Electrically installing a UPS, sometimes refer to as or protected power system is a specialised task and should only be performed by a qualified and experienced electrical contractor. The supplier of the UPS equipment should be able to undertake the installation work or supply a list of suitable contractors who can provide references of previous installations. Take the time to: 1. Check the credentials of the staff who will be installing the equipment 2. Contact and investigate previous installations and discuss their work with the staff on the other sites. It is important to ensure that the installation is carried out in strict accordance with the supplier’s instructions and it complies with local and national electrical installation regulations. Installation Design Small and medium sized UPS equipment will probable require very little installation work and minimal changes to the existing electrical wiring. However, if larger, high-power UPS equipment is being installed then careful consideration of the switchgear and cabling arrangements must be made. Considerable time and therefore cost savings can be made by carefully planning the electrical installation to allow for possible business growth and the addition of extra UPS Modules. Using an integrated switchgear and bushbar solution, makes the installation process for a modern parallel system much simpler by: 1. Providing a single point of entry for the incoming mains supply 2. a single point of entry for the bypass mains supply 3. a fully interlocked maintenance (or wrap-around) bypass circuit 4. correctly sized bushbars and circuit breakers 5. co-ordinated protection for the load and UPS equipment 6. straightforward connection of load distribution panels

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