Technical evaluation for 2 kva ups system

Stage 1: by Output Dependency from Mains

Code

„Where the UPS ouput is Independent of supply (mains)

Voltage and Frequency variations"

=> Online UPS

„Where the UPS output is Dependent on supply (mains) frequency

variations, but supply Voltage variations are conditioned

(Independent) ... „

=> Line Interactive UPS

„Where the UPS output is Dependent on supply (mains)

Voltage and Frequency variations"

=> Offline UPS

Stage 2: By generated Output waveform

Code

sinusoidal: total harmonics factor D < 0,08 (IEC 61000- 2-2/ - 4) under all linear and under reference non-linear load

or

Non-sinusoidal: D > 0,08 under reference non-linear load

or

Non-sinusoidal: exceed the limits of IEC 61000-2-2/ - 4

First character: normal mode

Second character: storage energy mode / battery mode

Code by Output tolerance curve

1 , 2 3

... under the following conditions:

First Character: change of operation mode

Second Character: step linear load in normal & storage energy mode

Third character: step non-linear load in normal & storage energy mode

Classification code complete

Output dependency Output waveform Output dynamic performance

VFI SS 111

VI SS 122

VFD SY 333

VFI: against all of 10 Disturbances First Class Real Double Conversion / Online

VI: against 5 of 10 Disturbances only Second Class Line-Interactive

VFD: against 3 of 10 Disturbances only Third Class Offline

Crest ration will be 3 or 4 (maximum)

Output Power factor will be maximum (0.96 to 0.99)