• Relay cable with 0.14 … 4‑mm
2
(26 … 12 AWG) conductors and 7 … 12‑mm (0.28 ... 0.47 in)
external diameter for connecting external devices to the relays. Verify that the required
current carrying capacity matches the specification of the cable.
• RS-485 cable
• Shielded outdoor Ethernet cable with a RJ45 connector for the permanent Ethernet
connection
• Laptop computer with:
• RJ45 Ethernet connector
• Web browser (Google Chrome, Microsoft Edge, or Mozilla Firefox)
• Ethernet cable with RJ45 connectors for temporary use
Oil pipe construction
Not supplied by Vaisala.
The amount of required oil pipe construction materials depends on the intended pipe length.
Two pipes are needed, one for intake and one for returning the oil. Using the recommended
pipe material, the maximum allowed length of a single pipe is 10 m (33 ft). If you are using a
smaller pipe (minimum inner diameter 4 mm (0.157 in)), the maximum length is 5 m (16 ft).
• Recommended oil pipe material: stainless steel tubing with 10‑mm (0.39‑in) outer
diameter and 1 … 1.5‑mm (0.039 … 0.059 in) wall thickness. Enough to connect the oil
intake and return valves to the DGA monitor.
• Adapters for connecting the oil pipes to the valves on the transformer
• Adapters for connecting the oil pipes to the DGA monitor, if not using the recommended
tubing size (10‑mm (0.39‑in) outer diameter). Optional accessories for connecting 3/8"
and 1/4" outer diameter tubing are available from Vaisala.
• Pipe fittings for joining pipe sections
• Pipe supports
• Oil pipe insulation (if necessary due to cold climate)
• Oil absorption material for controlling possible leaks
• Rags for wiping o oil
Mounting using Wall Mounting Set
Not supplied by Vaisala.
• M8 anchors or bolts (suitable for wall material)
Other
Not supplied by Vaisala.
• Personal safety equipment as required by installation site and applicable legislation
2.5
Recommended tools
Hand tools
• Slotted and crosshead screwdrivers
Chapter 2 – Planning the installation
13
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