operation (continued)

bypass options

automatic bypass

(UPSs fitted with the plug-in "automatic bypass" module 21 )

cthe flashing green indicator light 1f indicates operation on "automatic bypass". This bypass is used to directly supply the load by the AC power (see figure 7):

v in the event of an extended overload, v if a fault occurs on the UPS (yellow indicator light 1b flashing, see paragraph on UPS faults).

"automatic bypass" operating diagram

automatic bypass

21

rectifierinverter

AC power

load

7 (and 32 )

battery

manual bypass

(UPSs fitted with the "manual bypass" connection module 25 or 31 )

Caution:

cwe recommend that you carefully read the following instructions or that you contact the after-sales service before handling the "manual bypass" 28 .

If the device is faulty (see paragraph on "device fault"), prompt transfer of the "manual bypass" is strongly recommended ;

cthe load may only be switched if the frequency and voltage of the AC power are within the operating range (see section on technical data).

Figure 7

 

 

 

 

"manual bypass" operating diagram

 

 

 

 

 

automatic bypass

 

 

21

 

 

manual

 

 

 

 

 

 

 

 

bypass

rectifier

inverter

 

load

 

 

 

 

AC power

 

 

 

 

 

7

(and

32 )

28

 

battery

 

 

 

Figure 8

36

Pulsar EX : 51032306XT/BB

MGE UPS SYSTEMS

Page 46
Image 46
MGE UPS Systems EX30, EX20, EX40 manuel dutilisation Bypass options, Manual bypass, Automatic bypass operating diagram