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EST series 250KVA online three phase in three phase out UPS is an on-line double-conversion UPS with output isolation transformer built-in, offering high levels of reliability and performanance for all kinds of load, not only IT systems, banking and communications, but also medical service and industrial applications, its perfect reliablity and performance make it most popular in some countries with harsh and unstable grid.
● Online double conversion with full DSP control; IGBT rectifier
● pure sine wave output, zero transfer time
● Suitable for all kinds of loads (resistive, inductive and non-linear loads ect.)
● High overload capability (up to 150%)
● Support battery cold start and auto-restart when mains power is restored
● High charging capability
● Standard configuration with output isolation transformer
● Superior protection (surgers, short-circuit, overvoltages, undervoltages, overcharge, overload, over tempretuer, reverse connection protection etc.)
● Advanced communications RS232(standard)
● Optional configuration: USB ports, SNMP, dry contacts and RS485
● Other options(parallel kits, input isolation transformer, bypass isolation transformer and harrmonic suppressor)
● Standard automatic and manual maintanance by pass
● LCD touch screen, friendly human & machine interface
● Front access makes maintenance and replacement easy
● large capability of history records storage
● Optional input filter to improve input power factor
● High efficiency 95%
● Low input distortion: THD < 5%
● Generator compatible
● High immunity to external disturbances
● Optional N+X redundancy parallel up to 8 units
● 100% unbalance load capability
| model | TT250K |
| Norminal capacity(KW) | 250/200 |
| battery voltage | 384VDC/396VDC |
| Charge current | 20A~60A(adjustable) |
| Input voltage | 380V±25% |
| Input Frequency | 50/60Hz±10% |
| Output voltage | 380V±1% |
| frequency | Synchronized with utility in mains mode,50/60Hz±1% in battery mode |
| Waveform | Pure Sine Wave |
| Total harmonic distortion | Linear load<3%;non-linear load<5% |
| Crest factor | 3:1 |
| Protection | Short-circuit,overload,overvoltage,undervoltage,low battery,overtemperature,fan fault |
| Inverter overload capability | 125%,10min;150%,1min |
| Transfer time | 0ms |
| Operating temperature | -20~40℃ |
| Relative humidity | 0~90% |
| Running high(maximum) | <1000(each additional 100 meters power fell 1% to a maximum 4,000 meters) |
| Cooling | Forced ventilation |
| Noise | ≤65DB(Distance 1m) |
| Size | 1250*850*1700 & 800*850*1700(W*H*D mm) |
Contact us for updated pricing and samples
