Torque limits for CRN pumps
Flange, DN
[mm]
CRN
Torque, Y-direction
[Nm]
Torque, Z-direction
[Nm]
Torque, X-direction
[Nm]
100
95
750
950
1250
150
125 and 155
1250
1550
2000
200
185, 215 and 255
1800
2150
2750
3.2 Electrical connection
Follow the instructions for the motor when
carrying out the electrical connections.
The electrical connection must be carried out by an
authorised electrician in accordance with local
regulations.
WARNING
Electric shock
Death or serious personal injury
‐
Before starting any work on the prod-
uct, make sure that the power supply
has been switched off and that it can-
not be accidentally switched on.
‐
Connect the pump to an external main
switch close to the pump and to a mo-
tor-protective circuit breaker or a CUE
frequency converter. Make sure you
can lock the main switch in OFF posi-
tion (isolated). Type and requirements
as specified in EN 60204-1, 5.3.2.
WARNING
Electric shock
Death or serious personal injury
‐
Connect the pump to the same protec-
tive-earth (PE) potential as the motor if
both motor bearings are of the insula-
ted type such as ceramic bearings.
3.2.1 Maximum absorbed current
Some motors can absorb a maximum cur-
rent which is larger than the full load cur-
rent I
1/1
stated on the nameplate. See the
table below.
Motor type according to the
nameplate
Upper limit for
absorbed current
•
Motors marked with both of
the below:
- full load current I
1/1
- maximum current I
max
I
max
•
Grundfos MMG-G motors
•
Grundfos MMG-E motors
1.1 x I
1/1
•
Motors marked only with the
below:
- full load current I
1/1
I
1/1
18
English (GB)
Summary of Contents for CRN 125-11
Page 2: ......
