Switching power supply

BKE 19“ inverters with a Bypass SJ-1K0-2K3/2U2_BP

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BKE 19“ inverters with a Bypass

The SJ inverter series with bypass (BP) are designed to be used as a backup of the mains supply. They allow to supply appliances directly from the mains net (230 V AC) or a DC back-up (battery or power supply in the range of 36-72 V DC). Preference of the AC or DC input, i.e. which one will serve as the main and which one as the back-up input, can be set in production. At the output side, there is always pure 230 V AC/50 Hz (or 60 Hz) sinus voltage controlled in such a way, that its shape always corresponds to the sinus reference at the input, even in the cases of non-linear loads. The time necessary for automatic switching to the back-up in the case of an outage of the preferred mains is shorter than 15 ms, which secures the supplied appliance from any discontinuation. The inverters are automatically synchronized, so its outputs are in phase with the mains.

 The units are designed as a 19” sub-rack, are 2U high and are equipped with controlled forced air circulation with a side suction. Communication port (for an optional LCD display) and alarm relay connector as well as connection points are located on the front panel.

INVERTER PURE SINE WAVE 24 V 48/60 V 110 V
Nominal battery voltage 24 V 48/60 V 110 V
Input voltage range 18 - 36 V 36 - 72 V 72 - 144 V
Continuous power 1000 W (1200 VA) 1000 W (1200 VA) 1000 W (1200 VA)
Peak power max. 20 min. (active limitation) 1100-1200 W (1375-1500 VA) 1100-1200 W (1375-1500 VA) 1100-1200 W (1375-1500 VA)
Peak power max. 20 sec. (active limitation) >1300 W (2400 VA -shutdown) >1300 W (2400 VA -shutdown) >1300 W (2400 VA -shutdown)
Max. efficiency 92 % 92 % 92 %
Cos ϕ 0,1 induct. / 0,8 capacitive 0,1 induct. / 0,8 capacitive 0,1 induct. / 0,8 capacitive
Current of short-circuit 10 A 10 A 10 A
Output voltage / frequency (pure sine wave) 230 V AC / 50 Hz 230 V AC / 50 Hz 230 V AC / 50 Hz
Frequency accuracy 50 Hz +/- 0,03 % 50 Hz +/- 0,03 % 50 Hz +/- 0,03 %
Distortion <2,5 % @ nominal load <2,5 % @ nominal load <2,5 % @ nominal load
Consumption no load 20 W 20 W 20 W
Overheat protection - shut down / auto restart inner temp. 80 °C / 70 °C inner temp. 80 °C / 70 °C inner temp. 80 °C / 70 °C
Operating temperature -10 °C up to 50 °C -10 °C up to 50 °C -10 °C up to 50 °C
Deep discharge battery protection yes yes yes
Alarm output fail relay contact relay contact relay contact
Communication I2C* I2C* I2C*
Dielectric strength P-S  4 kV / AC 1 min 4 kV / AC 1 min 4 kV / AC 1 min
Protections overload, reverse polarity, overvoltage, undervoltage, overheat, inrush current limitation, pure sine wave control
GENERAL DATA      
Weight cca 5 kg
Dimensions incl. mounting bars (WxHxD) 483x88x240 mm
IP Protection IP20
Relative humidity operation 95 % non condensing
Forced ventilation variable speed
EC conformity yes
EN EN60950 / EN61000-6-1 / EN55022/B
OPTIONAL LCD CONTROL DISPLAY, MPPT CHARGE CONTROLLER, AS 19'RACK VERSION AVAILABLE UPON REQUEST
* Monitoring and parameter settings DATA MAY CHANGE WITHOUT PRIOR NOTICE