![background image](http://html1.mh-extra.com/html/orion-italia/ipr-d/ipr-d_instruction-manual_1653248014.webp)
Chapter 2: Installing
CURRENT PROTECTION RELAY - IPR-D
Manual P/N: IPR-D GBM 01/09/2006
2.2
2.4
WIRING – OUTPUT RELAY AND DIGITAL INPUTS
Before carrying out the installation of the unit, it is necessary to read and understand the
indications provided by the Constructor.
All the installation operations must be carried out by qualified personnel with adequate
knowledge of the functioning of the unit and of the content of this manual.
Terminal blocks in the rear side of the unit make the electrical connections.
DIGITAL INPUT
TERMINALS No.
DIGITAL INPUT 1
DIGITAL INPUT 2
DIGITAL INPUT 3
BREAKER STATUS
17 – 18
19 – 20
21 – 22
23 –24
Figure 2.2 –
Rear view
The 4 output relays on the IPR-D are the following:
Relay Type
Note
Terminals
TRIP
N.O.
Programmable: “pulsed” or “latched”
1 - 2
AUX1 N.O.
Programmable: “pulsed” or “latched”
3 - 4
AUX2 N.O.
Programmable: “pulsed” or “latched”
5 - 6
AUX 3 - SERVICE
N.C.
Programmable: “pulsed” or “latched”
[if set as SERVICE: used for signalling any control power drop or internal
fault]
7 - 8
•
In Fig. 2.3 the relays contacts are represented in condition of no power supply.
•
Generally, the circuit breaker AUX 52a contact is connected in series to IPR-D TRIP contact for cutting the
current to the coil. For high-absorption trip coils an auxiliary relay is needed.
•
The service contact is failsafe: it reacts in case of control power drop or of internal fault of the unit. The contact
is N.C.. Connect the SERVICE relay to an external alarm system. For configuring AUX3 relay as a service
relay:
Æ
"Setpoint Page 2 - OUT OF SERVICE ON AUX3".
The digital inputs must be connected only to dry-contact circuits so as to avoid damaging the IPR-D.
No external voltage should be applied to the corresponding terminals as they are internally energized
from the IPR-D and opto-coupled to the sensing circuitry.
Digital outputs should be isolated from each other for correct operation. The maximum input impedance
to these digital outputs is 2 k
Ω
.
The power supply must be connected to terminals
32
and
34
.
For further information:
Æ
§ 1.7 – "Specification"
Summary of Contents for IPR-D
Page 2: ......
Page 4: ......
Page 24: ......
Page 34: ......
Page 38: ......
Page 40: ......
Page 42: ......
Page 44: ......
Page 49: ...Appendix A CURRENT PROTECTION RELAY IPR D Manual P N IPR D GBM 01 09 2006 A 5...
Page 50: ...Appendix A CURRENT PROTECTION RELAY IPR D Manual P N IPR D GBM 01 09 2006 A 6...
Page 51: ...Appendix A CURRENT PROTECTION RELAY IPR D Manual P N IPR D GBM 01 09 2006 A 7...
Page 52: ......