inform InfoSTS, Руководство пользователя

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BLOCK DIAGRAM OF THE STS
Figure – 2 STS Block diagram
S1
Source 1 input circuit breaker (MCCB)
This switch is thermal and magnetic protected type and
shutdowns source 1 input
S2 Source 2 input circuit breaker (MCCB)
This switch is thermal and magnetic protected type and
shutdowns source 1 input
S4-1 Mechanical bypass switch to source 1
During maintenance these contacts connect Source 1 input
to STS output directly
S4-2 Mechanical bypass switch to source 2
During maintenance these contacts connect Source 2 input
to STS output directly
S3
Output switch
This switch shutdowns the output voltage of STS . During
maintenance the position of this switch must be OFF.
SS1 Static transfer SCR circuit to source 1
This static switch contains SCRS and snubber components
and driven by a driver circuit which is controlled by the
microprocessor.
SS2 Static transfer SCR circuit to source 2
This static switch contains SCRS and snubber components
and driven by a driver circuit which is controlled by the
microprocessor.
NOTE : Figure 2 shows only 1 phase of 3 phase construction. The other phases are not shown.
The maintenance bypass switch is a 3 pole change-over switch
1 Maintenance bypass to source1
0 Automatic operation
2 Maintenance bypass to source2
Source 1 and Source 2 input circuit breakers are MCCB’s with thermal overload and magnetic short circuit
releases.
A Manual Static Bypass Switch is also available for easy load transfer.