7/3/2013 | 71-028-V4-EP1000 EN, FR
Installation Guide
SKF Dynamic Motor Link - EP1000
3
Choosing a suitable location for the EP1000
The EP1000 may be mounted in a variety of locations
as long as the following criteria are met.
1) The EP1000 must be installed in a cabinet or
enclosure that is secured with a tool or key lock.
2) Voltage and current lines can be easily and safely
run to the EP1000 in accordance with applicable
electrical codes.
3) The MCC cable can reach the cabinet door, and
the movement of the door is not restricted.
4) The EP1000 does not interfere with or complicate
the mechanical operation of the cabinet (i.e. doors
opening, terminal blocks covered, slide rack
interference).
5) The physical location of the EP1000 does not
cause an electrical, environmental, or safety
hazard.
6) An earth ground from the motor cabinet to the
EP1000 ground stud is installed.
The EP1000 may be affixed to the interior of the
cabinet by any means deemed appropriate; however, it
is recommended that a positive mounting system such
as metal screws be utilized. Supplied with the EP1000
is a mounting template for the enclosure, as well as self
tapping metal screws. The template is a 1:1
representation of the EP1000 enclosure, and can be
used for location assessment as well as mounting hole
placement. Once the location is decided:
1) Mark the mounting holes from the template to the
cabinet.
2) Remove the template.
3) Drill the mounting pilot holes.
4) The EP1000 enclosure may now be mounted to
the cabinet with the screws provided.
Choosing a suitable location for the panel plug
The panel plug is to be mounted on the door of the
cabinet. The location should be easily accessible from
the outside of the cabinet, providing the user an easy
and obvious hookup scheme. Once the location is
decided:
1) Mark the center hole to the cabinet.
2) Drill the center hole.
3) Using whatever means deemed appropriate,
remove the center cutout. It is recommended that
either a 2.5-inch Greenlee style punch or hole
saw be used to create the cutout.
4) Once the cutout is removed, place the plug over
the hole, and mark the four mounting holes.
5) Remove the plug, and drill the four outer
mounting holes.
6) Mount the plug and the back plate.
7) Provide strain relief for the cabling attached to the
panel plug.
Current transformer (CT) connections
1) The supplied CTs are to be placed on the three
voltage feeds to the motor.
2) These should be placed on the load-side of any
line protection devices (circuit breakers). Care
should be taken to ensure the dots on the CTs
point toward the load (motor). Red is phase A,
blue is phase B, and yellow is phase C.
3) The SKF CTs should be installed on the output of
existing CTs in the system for all motors operated
at voltages above 600V. Check that the output of
the secondary is less than or equal to the rating of
the SKF CTs.
4) Ensure there is enough wire length to connect to
the EP. If installed CTs are used, be sure to note
the ratio, as this information will be needed when
creating a motor ID.
Voltage connections
NOTE: On motors with input voltages higher than
1,000 V AC it will be necessary to make the connection
after a Power Transformer (PT) located between the
voltage source and the EP.
Three-phase voltage should be connected to the
EP1000 once it is installed. Installing a fuse block near
the EP, connected in-line between the EP1000 and the
voltage source, is recommended. Ensure there is
enough wire length to connect to the EP.
Electrical connections
*CABINET VOLTAGE MUST BE DE-ENERGIZED FOR
THE INSTALLATION* Once the EP1000 has been
mounted, CTs have been installed, and three-phase
voltage lower than 1,000 V AC is made available, the
electrical connections may be made.
1) Connect the three CT twisted pairs to the EP1000
current terminal block corresponding to the
appropriate phase, marked Ia, Ib and Ic (from
right-to-left); white wire on the right and black
wire on the left for each phase. Tightening torque
is 0.5 N-m.
To Next Page
Loading...
Need help?
General
