Page 238 - Power Quality in Electrical Systems

220 Index

International Special Committee on Malfunction, modes of, 160
Radio Interference (CISPR), 21, 23 Manual inputs, 163
on EMI, 21, 23 Manual transfer switches, 198
on harmonic current limits, 107 Maxwell Technologies, 144
Interruptions, 7, 8 MCFCs (molton carbonate fuel cells), 142
defined, 7, 35 Mean-time to failure (MTBF), 113
PCs affected by, 160–161 Measuring devices, 201–213
Inverters, 133 with current probes, 203–204
Delta battery, 134 for current transformer analysis, 205,
in double-conversion UPS, 129 207–213
PWM, 99, 115, 132, 149 harmonics affecting, 44
ITIC curves (see Information Technology with multimeters, 201–202
Industry Council curves) with oscilloscopes, 202–203
with power-quality analyzers, 205, 206
K-factor transformers, 10 with power-quality meters, 205
with search coils, 204
Lamps, incandescent, 44 Medical electronics, 6
LANs (Local area networks), 191 Medium-term energy storage, 137
Lighting, 199 Metal-oxide semiconductor field-effect
Lightning strikes, 30–33 transistors (MOSFET), 21, 95
Line current: Metal-oxide varistors (MOVs), 7
for ASDs, 73–74 Metering, 2
harmonics, 64, 66–69 Meters, power-quality, 205
Line impedance stabilizing network Method for correction (see Correction
(LISN), 106–107 methods)
Line reactor(s), 79–81 MG sets (see Motor-generator sets)
application of, 10 Mitigating devices, 10
THD with, 81 Mitigating voltage disturbances, 10
Line reactor filters, 79–81 Modes of malfunction, 160
Linear loads, 2, 3 Modular UPSs, 136
Line-interactive UPSs (see Delta UPSs) Molton carbonate fuel cells (MCFCs), 142
Line-voltage sine waves, distortion to (see Monitoring power quality (see IEEE
Voltage distortion) Standard 1159)
Load(s): MOSFET (see Metal-oxide semiconductor
of E/G set, 197 field-effect transistors)
linear, 2, 3 Motor(s):
nonlinear, 3–6, 56–58, 76 electric, 5, 173
resistive, 207 harmonics affecting, 44
Load current harmonics: induction, 173–177
load voltage affected by, 58–61 Motor-generator (MG) sets, 10
THD affected by, 58–61 MOVs (metal-oxide varistors), 7
Load equipment design, 110, 114–117 MTBF (mean-time to failure), 113
Load voltage, 58–61 Multimeters, 201–202
Local area networks (LANs), 191 Multisection filters, 87–95
Logic, 163
Long-term energy storage, 137–138 Networks, for distribution, 110
Loops, phase-locked, 164 Neutral currents, 55–56
99.999 percent (“five nines”) availability,
Magnetic fields, 2 113
Main Contactor Coil, 165, 166 Noise, 8
Maintenance, of standby power system, from conducted EMI, 100
189 filters, 10
Maintenance by-pass, 133 Non-emergency standby, of E/G set, 197