Toronto Electricians and Electrical Contractors

For electrical contractors and other IT service and equipment providers, helping customers decide which uninterruptible power supply (UPS) is best for their needs requires asking lots of questions to determine exactly what those needs are, with respect to the loads the customer needs to protect and how much run time is required. The first issue is to determine whether the customer needs a single- or 3-phase UPS. That requires taking a look at the loads the UPS will protect, to assess their voltage range, or kVa value. Generally, loads of 20kVA or less can safely use a single-phase UPS. Larger loads will likely need a 3-phase UPS. If it’s determined that a 3-phase UPS is required, the next question is whether to use a 3/1 configuration or 3/3. A 3/1 UPS takes in 3-phase power but puts out single phase while a 3/3 takes in 3-phase power and likewise delivers 3-phase to the downstream loads. Here again, the answer will largely be dictated by the downstream loads the UPS is protecting....