CAPACITY 10KVA /8KW Nominal Voltage3 x 380VAC/400VAC/415VAC (3Ph + N or 3Ph + N + G)Acceptable Voltage Range304VAC ~ 456VACInput Frequency Range50Hz ±5 Hz (±10%)Output Voltage3 x 380VAC/400VAC/415VAC (Selectable)Connection TypeHardwire 5-wire (3Ph+N+G)Output Voltage StabilitySteady state ±1% Transient state ±5%Frequency 50 HzFrequency Stability ± 1%Frequency Synchronisation Range± 5Hz (Equal to bypass working range)Frequency Synchronisation Speed 1~2 Hz/s Power Factor0.8Crest Factor3:1Dynamic in-rush Voltage Range0%->100%->0% (R Load) < ±5% ; 20%->100%->20% (R Load) ±3%Dynamic Recovery Time0%~100% RCD load : < 60 ms recover to 90% of nominal voltagePhase Displacement120º ±1% (balanced load) 120º ±2% (imbalances 50% of the load) Transfer Time0 msOverload Capability0% ~ 110% continuous running; 110% ~ 150% for 10 min~1 min; >160% for 200msShot Circuit Capacity60~100msTransient Response Time< 5msEfficiency (At Linear Load)90%ECO ModeYESEPO FunctionYESStandardIEC 61000-4-5 Protection surge, IEC 62040-2 EMC/EMI, IEC62040-1 SafetyIP ProtectionIP20 (Default), IP21/IP31 (Option)Dimension (Mm)800 x 800 x 1800Operating Temperature0~ 35°C continuous running, 40°C 8-hour running at nominal input voltage, recharging batteries and no overload, 45°C derating to 85% with linear loadHumidity0~90% (non-condensing)Noise LevelLess than 70dB @ 1 MeterModbus RS-232/RS485Supports Windows® 2000/2003/XP/Vista/2008/7/8/10, Linux and MAC