8. Dimensions for the H201Ci-C and H201Ci-1 enclosures are shown in Figure B – 7
and Figure B – 8 in Appendix B.
9. The power supply source of the H201Ci Controller must be protected by an
adequate switch or circuit-breaking system as the means for disconnection:
• The switch or circuit-breaking system must be included in the building
installation.
• It must be in close proximity to the equipment and within easy reach of the
operator.
• It must be marked as the disconnecting device for the equipment.
• The installation shall be done in accordance with local wiring regulations.
6.2.4 Cabling and Network Configuration
Starting with the CPU FW 4.0, several Hydran 201Ti (max. 32) installed in a sub-
station can be linked together using the RS-485 port, to form a local network and
connect to a host computer through a converter RS-485 to USB.
The classical option is also supported: several Hydran 201Ci Controllers installed in a
station can be linked together using an RS-485 link to form a local network. A local
network of Hydran 201i Systems can include up to 32 H201Ci Controllers and 128
Hydran 201Tis. The H201Ci Controllers (Hydran 201Ci-Cs and/or Hydran 201Ci-1s) can
all be connected together. The network configuration is explained in Chapter 10.
Any H201Ci Controller in a local network can be connected to a host computer
(running the General Electric’s Hydran Host or Perception software, depending on the
protocol set on the unit) through an RS-232 or USB link to monitor all the H201Tis in the
network. The host computer and the network can also communicate through a modem,
thus allowing remote monitoring.
To maximize the benefits of a network, simple guidelines should be followed. Use the
following rules to install and implement a network of Hydran 201i Systems.
6.2.4.1 Parameter Settings
1. The parameters of each H201Ti (identification number, power station
identification number, communication speed, alarm set points, operation mode of
relays, etc.) must be selected before field installation.
2. Each H201Ti of a local network must be set to an individual and exclusive
identification number (parameter H201Ti ID in the Communication submenu)
selected between 1 and 254. The numbers can be assigned sequentially or using
any other method preferred by the user. If two H201Ti’s share the same number
in a local network, they are not able to communicate properly with the host
computer. It can be useful to assign numbers that correspond to the
identification numbers of the transformers being monitored; for an example, see
Table 6-1.
3. All H201Tis belonging to a local network must share a common power station
identification number (parameter PowerStat. ID in the Communication submenu).
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