The ABB HiPerGuard operates at the Medium Voltage level, providing superior impedance matching and fault-clearing capabilities compared to traditional Low Voltage systems. In the Indian context, where industrial grids often face transient surges and significant voltage sags (brownouts), the HiPerGuard’s ability to maintain a stable output within ±10% of nominal voltage is critical. It acts as a high-speed buffer between the unstable utility grid and sensitive downstream equipment, utilizing its high-speed static switch to isolate the load from grid disturbances in less than 20ms, effectively providing a 0ms transfer time to the inverter. This is vital for modern Power Supply Units (PSUs) that have very low hold-up times.
The system delivers a pure sine wave with exceptionally low Total Harmonic Distortion (THD), which is vital for the longevity of MV motors and sensitive medical imaging equipment like MRIs. In Indian facilities where non-linear loads are prevalent, the HiPerGuard’s unity power factor (1.0) ensures that the active power (2250 kW) equals the apparent power (2250 kVA), maximizing the utility of the system without the derating often required by lower-quality systems. This high Crest Factor capability allows it to handle the inrush currents of large industrial motors without tripping.
Utilizing Lithium-ion (Li-ion) technology, the HiPerGuard is better suited for the high ambient temperatures of Indian summers compared to traditional VRLA batteries. Li-ion chemistries offer higher energy density and a longer cycle life in tropical conditions, with sophisticated Battery Management Systems (BMS) that monitor cell health and prevent thermal runaway. With a peak efficiency of 98% at 50-100% load, the HiPerGuard minimizes heat dissipation, reducing the cooling load on HVAC systems in data centers and industrial control rooms, which is a significant operational cost factor in India.
