GE Reason H49, Technical Manual, Page: 41 / 158

GE Reason H49 Technical Manual
H49/EN M/C22 41
Chapter 6: Connection
As well as connections to the Ethernet network, Reason H49 requires auxiliary power
supply connection and safety earth connection. Alarm outputs are provided and
these should be connected for system supervision.
The locations of the various connection points are detailed section Bottom view.
6.1 General Wiring
Only two wires can be screwed together on any one connector. The AC and DC signal
and communication wires should use separate shielded cable.
Caution:
A high rupture capacity (HRC) fuse must be used for auxiliary supplies (for
example Red Spot type NIT or TIA) with the following characteristics:
•
Current rating: 16 Amps
• Minimum dc rating: 220 V dc
•
gG operating class in accordance with IEC 60269
The fuses must be connected in series with the positive auxiliary supply input
connections for both primary (Pin 23) and secondary (Pin 1) BIU261D inputs.
Wires should be connected with the power supply connectors unplugged. Each wired
signal has to be tested before plugging and fixing the connectors. The connectors
have to be fixed on the H49 case with the screws available at each extremity of the
connector.
For connection of the protective (earth) conductor, refer to chapter 6.2 Earth Wiring
page 42 .
6.1.1 Well-organized Wiring
Caution:
Improperly installed cabling can affect device performance and generate
interferences.
To avoid interferences, careful placement of cables is required. The principle
consists in physically separating power sources (AC/DC) and communications
cables (i.e. high voltage from RJ45/Copper). This is even more important
when devices receive time synchronization from PTP master clock.
Whenever possible, use cableways or troughs.