Site Preparation – Operating Environment
14 Smart-UPS® VT 10-30 kVA, 208/220 V Site Preparation and Installation Manual 990-1598B
Minimum breaker settings for 15 kVA UPS
Note 1: For the output value, the short-circuit-level is indicated
Minimum breaker settings for 20 kVA UPS
Note 1: For the output value, the short-circuit-level is indicated.
Minimum setting of breakers for 30 kVA UPS
Note 1: For the output value, the short-circuit level is indicated.
Overload Event Mains input Bypass input Output Duration Notes
Internal fault 2.5 kA 2.1 kA 14 kA <10 ms 1
800% overload bypass
operation
– 333 A 333 A 500 ms
150% overload normal/
battery operation
– – 63 A 30 s
125% overload normal/
battery operation
– – 52 A 60 s
Continuously 51 A 46 A 46 A
∞
Overload Event Mains input Bypass input Output Duration Notes
Internal fault 4 kA 3.4 kA 14 kA <10 ms 1
800% overload bypass
operation
– 444 A 444 A 500 ms
150% overload normal/
battery operation
– – 84 A 30 s
125% overload normal/
battery operation
– – 70 A 60 s
Continuously 68 A 62 A 62 A
∞
Overload Event Mains input Bypass input Output Duration Notes
Internal fault 5 kA 4.2 kA 14 kA <10 ms 1
800% overload bypass
operation
– 667 A 667 A 500 ms
150% overload normal/battery
operation
– – 125 A 30 s
125% overload normal/battery
operation
– – 105 A 60 s
Continuously 102 A 92 A 92 A
∞
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