250 kVA voltage stabilizer: specification guide
Specifying a 250 kVA regulator for industrial load, and the measurements that decide it.
500 kVA voltage stabilizer: specification guide
What to establish before specifying a 500 kVA regulator.
TNS 20 kVA voltage stabilizer: specification guide
Specifying a three-phase 20 kVA regulator for a motor or lift load.
TNS 30 kVA voltage stabilizer: specification guide
Specifying a three-phase 30 kVA regulator, including lift applications.
UPS battery selection and replacement
How battery capacity, autonomy and service life are determined, and when replacement is due.
SAKO stabilizers: selection and support
How a stabilizer is selected for a site, and what support matters afterwards.
UPS backup time calculation
How backup time is actually calculated, and why the simple formula understates the truth.
Online UPS: selection and sizing
How to size an online UPS, and why the nameplate rating is not the number that matters.
Legrand UPS systems
UPS families from Legrand and its INFORM brand, and how they are matched to a load.
Modular UPS systems
How modular UPS architecture is specified and why redundancy changes the sizing calculation.