Siel Green Point 6:20KVA Specifications download pdf (Page 13)

SP121E Rev. 000 Siel S.p.A. Pag. 13 of 42

Issued date: 2005-05-06

GREEN POINT

6 - INSTALLATION INSTRUCTIONS

6.1 Electrical system requirements

6.1.1 Protections

UPS INTERNAL PROTECTION

The size of the circuit breakers and fuses positioned in the UPS input/output lines are shown in the table below

(refer to the block diagram section for an explanation of the abbreviations). Any fuse that requires replacement

must only be replaced with a fuse of the same type and rating, as indicated in the table below.

UPS with SINGLE-PHASE OUTPUT:

Switches and Internal Protections

UPS

Type

Non-automatic switches Fuses

[kVA]

UPS

Input

UPS Output /

Maintenance

Rectifier

Input Fuse

Battery Fuse Bypass Fuse

Input

Current

[A]

Output

Current

[A]

SWIN SWOUT/SWMB FBAT FBY Max Rated

10 63A (4P) 63A (2P) 20A gR(10x38) 30A gR(10x38) 50A gR(14x51) 51 43

15 100A (4P) 100A (2P) 30A gR(10x38) 30A gR(10x38) 63A gG(22x58) 67 65

20 100A (4P) 100A (2P) 30A gR(10x38) 30A gR(10x38) 100A gG(22x58) 74 87

UPS INPUT PROTECTION

When installing the UPS input protection devices, the maximum current drawn will be dependent on the

operational mode of the system when a fault occurs, therefore the following two operational modes must be

taken into account.:

− During “NORMAL OPERATION”, the power to the load is supplied by the mains input via the

converter, and therefore the maximum input current drawn is that shown in the table above (under

the heading “Input current max) .

− During “BYPASS OPERATION”, the power to the load is supplied directly via the by-pass line,

therefore the maximum input current drawn is limited by the rating of the bypass fuse shown in

table above (under the heading “Bypass fuse FBY).

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Siel Green Point 6:20KVA Specifications Page 13

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