Brand: GE
Model: 201CI-1
Category: Transformer
Warranty: One year
• Operating ambient temperature
-40oC to +55oC (-40oF to +131oF)
• Operating ambient humidity
0-95% RH, non-condensing
• Oil temperature at valve -40oC to +105oC (-4oF to
+221oF) with finned heat sink adapter option
• Oil pressure at valve 0-700KPa (0-100psi)
• Vacuum resistant sensor

Controllers
The 201Ti can be connected to optional controllers to facilitate communication
with multiple units and create a local network.
• The Ci-1 controller is a one channel controller that replicates some of the
human interface functions (gas value display, alarm buttons). This is ideal when
the 201Ti is mounted out of reach on an upper valve of the transformer. It also
brings down the alarm relay contacts and the analogue output for easier wiring.
• The Ci-C controller receives the gas ppm data from up to four H201Ti, providing
a single communication point for all four monitors. It has no alarm relay or
analogue output. This is ideal when protecting 3 single phase transformers + 1

spare.
It is possible to “daisy-chain” up to 32 controllers or 201Ti through their RS-485
port. The maximum chain distance (all cables added up) is 1200m (4000ft). All
the 201Ti connected to any of the daisy-chained controllers can be accessed
through any controller in the local network, thus facilitating communication by
only having to fit one RS-232 modem for example.

For meaningful system readings and goodresponse tuime, the two most important factorsare proper location and installation of theHYDRAN* 201Ti The following details impor-tant considerations for the installation of theH201T÷
1. Mount the H20lTi on a fullbore gate valve(preferred) or a ball valve where there is agood forced or convective oil flow.2. Install the H20lTi on a valve with a diameterof 38 mm (1.5-inch). The recommended location to mount theH20lTi is on a straight section of the coolerreturn pipe, and on the discharge side of thepump if present. This location presents the sen-sor with the best combination of oil flow, oper-ating temperature range and ease of access.

The H20lCi Controller enclosure is aNEMA 4X (IP 66) type and can beinstalled outdoors.
It should be mounted on a vibration-free structure, or installed on vibration-absorbing mounts (available fromGeneral Electric Canada).
The cabinet should be placed at eyelevel and such that the door can befully opened.

Typical HYDRANe 201; System Installation
1.H201C; l enclosure, installed onanti-vibration mounts
2. Full-bore gate or ball valve
3. H20lTi Intelligent Transmitter4. Supervisory link cable in steel conduit5. H201Tisupply cable in steel conduit
6. Current loop and communication outputcable in steel conduit
7. Alarm cable in steel conduit and/or steelflexible (to customer alarm panel)8. H201C÷l enclosure supply cable insteel conduit