Table 4 Typical Trip Ratings For 10 - 30 Amp Ac Circuit Breakers - ABB 827E Product Manual

NOTE: The LINE and NEUTRAL of all shelves in a multiple-shelf system must be connected together
in an AC distribution panel or optional maintenance bypass panel (refer to J-Drawing 438827E
List number 51 and 52).
NOTE: The inverter's output protection will shutdown the inverter output after 5 seconds under
short circuit or deep overload conditions. Therefore, the response time of the breaker must
allow the breaker to trip within (4) seconds with a short circuit current of 28A per inverter.
Both the circuit breaker rating and number of inverters equipped in the system must be taken
into account to insure that the circuit breaker trips in the desired timeframe. If faster
response times are desired, e.g. below the AC holdup time of the AC equipment, then the trip
time must be decreased by lowering trip rating of the breaker, and/or increasing the number
of modules equipping the system.
Table 4 shows typical trip times of commercially available AC distribution circuit breakers. The table
lists "min-max" trip times based on most common circuit breaker ratings vs. number of equipped
−48 V inverters in the system. The maximum rating must be used to guarantee tripping within a
specific time. For special situations where commercial AC breakers do not meet the required trip
times, contact technical support for other options.
Number Avail.
10 A Trip Time
of −48 V Trip
(msec.)
Inverters Current
(A)
Min
3 84 400
4 112 5
5 140 5
6 168 5
7 196 5
8 224 5
9 252 5
10 280 5
11 308 5
12 336 5
13 364 5
14 392 5
15 420 5
16 448 5
17 476 5
18 504 5
19 532 5
20 560 5
21 588 5
22 616 5
23 644 5
24 672 5
* Circuit breaker rating not recommended for this number of inverters equipped
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15 A Trip Time
(msec.)
Max Min Max
2000 700 3000
1300 5 1600
800 5 1100
700 5 800
450 5 600
300 5 300
18 5 20.00
17.5 5 18.00
15 5 17.00
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
16.67 5 16.67
Table 4 Typical Trip Ratings for 10 – 30 Amp AC Circuit Breakers
20 A Trip Time 25 A Trip Time
(msec.) (msec.)
Min Max Min
1250* 5000* 1700*
400 2800 900
5 1600 600
5 900 400
5 600 250
5 400 60
5 18 5
5 17 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
5 16.67 5
30 A Trip Time
(msec.)
Max Max
7000* 4500* 20000*
3700 2250* 9000*
2500 1300* 5500*
1800 1000 4000
1300 600 2800
1000 475 2250
850 300 1700
700 200 1300
600 5 1200
500 5 1000
450 5 800
425 5 700
375 5 600
350 5 550
300 5 500
275 5 450
250 5 400
225 5 375
215 5 350
200 5 325
175 5 300
150 5 275