Aluminum frame water-cooled construction is only to be used with a closed fresh water circulation with
corrosive inhibitor described in the data sheet. The water cooling circuit connection is described in the
data sheet. Use only suitable and high-class connection parts and seals to connect the electric machine to
the water circuit. Check for possible leaks after the piping and joints have been connected.
Use only suitable and high-class connection parts and seals to connect the electric machine to the water
circuit. Check for possible leaks after the piping and joints have been connected.
It is recommended to use coolant connector equipped with o-ring seal or to use sealing washer (for
example Usit or Bonded seals) in the connection. In addition, it is recommended to use thread sealant
(Loctite 577 or similar) at the coolant connections to prevent loosening. Loosening can be caused by
vibration or temperature variations.
The electric machines are equipped with at least three PT100 temperature sensors in the windings. The
amount of the sensors depend on the options chosen. The temperature signal(s) can be read out from
the measurement connector of the machine.
You can connect the temperature signal to the temperature monitoring pin in the inverter (EC-C) and
make sure that the inverter has the electric machine temperature protection feature activated.
Electrical installation
Power connections
High voltage connection
Risk of electric shock when connection box is open. When you work with power connections
make sure that electricity is disconnected and shaft rotation is prevented.
When installing the connection box lid, make sure there are no foreign particles between the
connection box lid and the insulation and that all connection box fasteners are in place.
Missing or loose screws can compromise the insulation.
Make sure the power cables exit straight from the terminals and do not rub against the sharp
cable through-holes or other sharp edges which could wear out the cable insulation over
time.
Do not place any excess weight on the connection box lid(s).
The high voltage cables of the electric machine are connected to the connection box(es) of the electric
machine. The Figure below shows the components of the high voltage connection box assembly.
1. Remove the cover of the terminal box.
2. Install the power cables.
3. Install the cover of the terminal box back.
User Guide
EM-PMI540-T2000
Installation
36 |
©
Danfoss | July 2021
BC265857530809en-000202
