UPS-Teknik KR1000 Manuel d'utilisateur télécharger pdf (Page 13)

KR 1~3KVA

-7-

2 Basic Principles

When commercial power is normal, KR series UPS input, through PFC,

increases the voltage to ±410V stabilized DC voltage, which supplies DC/AC

inverter and transmits stable 230V AC, while at the same time completing the

charging of the battery. When commercial power is abnormal, the battery

increases the voltage through DC/DC to ± 410V DC voltage and supplies

DC/AC inverter.

UPS principle lock diagram is shown in Fig. 2-5. DC/AC inverter adopts

half-bridge structure, while DC/DC voltage increase adopts push-pull or

BOOST circuit. PFC is active power-factor correction circuit controlled by

UC3854, while CHARGER is complete isolation type charger.

PFC AC/DC

DC/AC

SW LOAD

DC/DC

BATTERY

CHARGE

230Vac

Fig. 2-5 UPS Basic Principle Block Diagram

Corresponding relations of pins for the RS232 serial ports of this series UPS

and those of general PC are shown in Table 2-1.

Table 2-1:

Corresponding relations of pins for the RS232 serial ports of this

series UPS and those of general PC:

Communication RS232 Interface for UPS General RS232 Interface

9 (3) 2 (Receive)

6 (2) 3 (Deliver)

7 (5) 5 (Ground)

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 30 31

Pas de commentaire

UPS-Teknik KR1000 Manuel d'utilisateur Page 13