APC Smart-UPS VT Installation Manual download pdf (Page 25)

Site Preparation – Operating Environment

990-2283 Smart-UPS® VT 10-40kVA 400V Site Preparation and Installation Manual 17

Recommended current protection

Note 1:

If the available fault current of the installation is below 30kA, a lower Icu-rated breaker can be used.

Note 2:

For breaker settings, refer to below tables listing available overload currents.

Note 3:

Maximum rating of a single fuse configuration if the internal bypass must be protected during a load

short circuit. Selectivity is not ensured by the configuration.

Note 4:

Maximum DC currents in Smart-UPS VT. Size cable for maximum DC currents as in table above.

Use 150° cable for installation.

Note

AC output over-current protection and AC output disconnect must be provided by the

customer.

Dual/single

mains

configuration

Connection 10kVA 15kVA 20kVA 30kVA 40kVA Notes

Dual Mains input 20A

breaker

(30kA)

35A

breaker

(30kA)

50A

breaker

(30kA)

63A

breaker

(30kA)

80A

breaker

(30kA)

1+2

Dual Bypass input 20A

breaker

(30kAIC)

35A

breaker

(30kA)

50A

breaker

(30kA)

63A

breaker

(30kA)

80A

breaker

(30kA)

1+2

Single Mains/Bypass

input

20A

breaker

(30kA)

35A

breaker

(30kA)

50A

breaker

(30kA)

63A

breaker

(30kA)

80A

breaker

(30kA)

1+2

Any Output 20A

Class

gL (gG)

fuse

35A

Class

gL (gG)

fuse

50A

Class

gL (gG)

fuse

63A

Class

gL (gG)

fuse

80A

Class gL

(gG) fuse

DC Max. batt.

Voltage ±192V

22A 33A 44A 66A 88A 4

DC Low. batt.

Voltage ±154V

27.5A 41.2A 55A 82.5A 109.9A 4

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APC Smart-UPS VT Installation Manual Page 25

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