Power and Energy Systems Guides13 technical guides for choosing Power and Energy Systems products: selection criteria, standards, common mistakes and frequently asked questions.CablesAutomation and ControlSwitching and Protection ProductsPower Factor CorrectionLightingElectrical and InstallationHardware and ConstructionPower and Energy SystemsWhat Is an Electric Vehicle Charging Socket? Types and Selection Criteria — An electric vehicle charging socket is the cabled plug that carries energy from the charging station to the vehicle inlet; Europe uses CCS2 for DC fast charging.What Is a Portable Power Station? Capacity, Output Power and Selection Criteria — A portable power station is a rechargeable energy source that delivers the energy in its built-in lithium battery through an inverter to a 230 V AC socket, USB and DC outputs.What Is a PDU (Power Distribution Unit)? Types and Selection Criteria — A PDU (power distribution unit) distributes power from a single supply line to the servers and network devices in a cabinet through multiple outlets.What Is a Single-Phase Servo Regulator? kVA Sizing and Selection Criteria — A single-phase servo regulator is a voltage regulator that corrects single-phase line voltage with a servo-driven variable transformer to give a steady output.What Is a Three-Phase Servo Regulator? Power per Phase and Selection Criteria — A three-phase servo regulator corrects three-phase mains voltage with servo-driven variable transformers, giving a steady voltage to a three-phase installation or machine.What Is an EV Charging Station? Types and Selection Criteria — An electric vehicle charging station (wallbox) is a fixed charging unit that delivers AC power from the grid to the vehicle and signals the current it may draw.What Is a Line Interactive UPS? Types and Selection Criteria — A line interactive UPS feeds the load from the mains, corrects the voltage with an AVR and switches to battery with a short transfer time when the power fails.What Are UPS Accessories? Battery Cabinets, Parallel Kits and Selection — UPS accessories are complementary hardware that extends a UPS's battery runtime, runs several UPS units in parallel and lets you monitor the UPS over the network.What Is a Servo Regulator? Types and Selection Criteria — A servo regulator is a voltage regulator that keeps the output constant when the mains voltage falls or rises, using a variable transformer adjusted by a servo motor.Regulators Selection Guide — A servo voltage regulator continuously measures the output voltage and corrects it steplessly; selection depends on single-phase or three-phase construction and kVA rating.Online UPS Selection Guide — An online UPS has a rectifier, a DC busbar and an inverter in series; when choosing, you need to know the normal, battery and bypass operating modes and the VFI class.UPS Uninterruptible Power Supplies Selection Guide — A UPS is an uninterruptible power supply that keeps powering connected devices from its battery when mains power is cut or disturbed. VFI/VI classes and selection.Power and Energy Systems Selection Guide — Power and energy systems consist of UPS, regulator, PDU, charging station and charging socket groups; the choice is made according to needs such as supply during an outage.