Page 7 (40)
Rev 1
2018-03-21
www.elcon.se
Go to INDEX.
2.2 CONNECTION OF SA10A TO MAINS POWE R.
The
SA10A
can be powered from any AC source 100-240V or DC source 100-240 VDC (with a ground connection).
When the
SA10A
is connected to a wall socket, the socket
must be a grounded power outlet
.
IMPORTANT!
The
SA10A
have a separate grounding terminal (green/yellow) that
must be grounded
to the nearest protective earth
(ground) with a separate wire.
3.0 CONNECTIONS
3.1 CONNECTIONS FOR TIME MEASUREMENT.
3.1.1 SAFETY REGULATIONS.
When only one side of the breaker is connected to earth (ground), special precautions must be observed. To protect
service personnel and the measuring equipment from surges, two important rules must be followed closely.
•
The
SA10A
case must be grounded.
•
All circuit breaker connections and disconn
ection’s must be made while the breaker poles are closed and connected
to earth (ground)
on least one side
.
•
To avoid unintentional breaker operation! Never do any work on a circuit breaker unless the control circuits of the
breaker are disconnected from the SA10A control outputs.
•
Use of touch-protected connectors.
3.1.2 PRINCIPALS FOR CO NNECTIONS TO SA10A.
To get a useful protocol and to fit to the PC-software it is necessary to connect contacts in a certain way:
•
Use separate contact groups ("Contacts 1" - "Contacts 3") for separate phases.
•
Use contacts "A" - "D" for separate breaker elements in each phase.
•
Use contacts "a" and "b" for connection of auxiliary contacts (live or free)
Note!
Do not exceed the input voltage limit of 250 V AC or 300 V DC.
3.1.3 CONNECTIONS FOR ONE BREAKING UNIT PER PHASE.
Figure 2.1 Connections for a one breaking unit per phase