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Inverter TBB

STM250 Series
Modular Inverter System

  Versatile modular design

  Hot swappable modules

  True sine wave output with THD < 3%

  Galvanic isolation

  Serial interface RS232 or RS485

  Monitor module and ATS with selectable operating mode

 

STM250 series is a rack mount inverter system housing up to four inverter modules and a monitor module with built-in ATS
(Automatic Transfer Switch).
The versatile modular design with hot swappable modules and no single point of failure is increasing system reliability. Real time systemparameters are displayed on the monitor LCD screen.

Electrical

  Nominal input voltage : 24Vdc, 48Vdc, 110Vdc, 220Vdc, 240Vdc

  Operating input voltage range : 20-30Vdc (24Vdc), 40-60Vdc (48Vdc), 93-143Vdc (110Vdc), 186-286Vdc (220Vdc),
198-302Vdc (240Vdc)

  Nominal output frequency : 50/60Hz ± 0,1%

  Output power : 1kVA, 1.5kVA or 2kVA / inverter module, max. 4 modules/shelf*

  Power factor : > 0.8

  Efficiency : 87%

  Output nominal voltage : 110/115/120Vac, 220/230/240Vac

  Voltage regulation : ± 2%

  Crest factor : 3:1

  Dynamic response time : < 20ms

  Isolation
– AC – DC : 2000Vrms
– DC – Ground : 2000Vrms
– AC – Ground : 2000Vrms

  THD : < 3% linear load, < 5% non linear load

  Overload : 150% – 1 min, 125% – 10 min min%MCEPASTEBIN%

  The 24Vdc input inverter is available only in 1kVA version.

Automatic Transfer Switch

  AC voltage range : -25% to +20% Nominal Vin

  Frequency range : 45 to 65Hz

  Operating modes : online (load supplied by inverter) and offline (load supplied by AC mains)

  Transfer time : 5-8ms

User interface

  LCD display with 2 x 16 characters

  Inverter module LED indicators : Fault, Load level

  Dry contacts : Overload, Line Fail, Low DC Voltage, Inverter Fault

  Serial port RS232 or RS485

Environmental

  Operating temperature : -10 to +50°C, with linear power derating above 40°C

  Storage temperature : -40 to +85°C

  Humidity : 0 to 95% RH non-condensing

  Altitude : -500 to +2800m

  Cooling : Forced air

  Ingress protection rating : IP20

Physical dimensions

  Shelf 19″ 3U / W443.5 x H133.5 x D498.9 mm, 7kg

  Inverter module : 4kg

  Monitor module : 3kg

Protection

  Reversed polarity

  Over-temperature

  Overload

  Output shortcircuit

  DC (Battery) overvoltage

  DC (Battery) undervoltage

  Bypass overvoltage

Bypass undervoltage

Agency Compliance

  Safety
– EN 60950-1, CE Marked to LVD 2006/95/EC

  Emissions
– EN55022
– EN61000-3-2
– EN61000-3-3
– EN55024

  Immunity
– EN 61000