Static bypass Overload curve | MGE UPS Systems Comet TM 5

operation (cont')

"Static bypass"		3	overload curve
time
10 mn
1 mn
10 s
1 s
							rated load
0,15 s							current In
0,15 s
1,05	1,1		1,3	1,5	1,7	1,9	2

Fig. 22

overloads on 5 kVA Comet S11 or S31

For a major temporary overload (greater than 1.5In):

The load is transferred to AC input power via the "static bypass" 3 for 5 seconds. After that time, it is transferred back to the inverter.

If the overload persists, this sequence will be repeated 3 times in all before the inverter is shut down and the supply of power to the load interrupted.

For a minor overload:

Minor overloads can be supplied by the inverter for a duration defined in figure 21 for an ambient temperature of less than 30°C. Above this temperature, a derating coefficient k must be applied to the rated current and therefore to the overload curve in figure 21:

■from 30°C to 35°C: k = 0.9,

■from 35°C to 40°C: k = 0.85,

■above 40°C: k = 0.8.

Example: an overload current I can be supplied by the inverter for 1 minute under the following conditions:

■1.1 In < I < 1.3 In for an ambient temperature of 25°C,

■1.1 x 0.9In < I < 1.3 x 0.9In for an ambient temperature of 32°C,

■1.1 x 0.85In < I < 1.3 x 0.85In for an ambient temperature of 37°C,

■1.1 x 0.8In < I < 1.3 x 0.8In for an ambient temperature of 42°C.

When an overload occurs:

■the buzzer 17 sounds,

■the orange "fault" light 19 goes on,

■ the inverter 7 shuts down at the end of its corresponding overload time,

■the load is supplied by AC input power via the "static bypass" 3 ,

■the green "load protected" light 21 goes off,

■the red "load not protected" light 18 goes on.

The load is supplied via the "static bypass" 3 for 5 seconds, after which it is transferred back to the inverter. If the overload persists, the inverter shuts down and the supply of power to the load is interrupted.

6.4

Comet installation and user manual: E-6761200XT/FA

Merlin Gerin by MGE UPS SYSTEMS

Comet TM 5 - 30 kVA specifications

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MGE UPS Systems Comet TM 5 - 30 kVA Overloads on 5 kVA Comet S11 or S31, When an overload occurs

Models: Comet TM 5 - 30 kVA