113 • Start Procedure for Medium voltage Motor
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13.3
Medium Voltage Test Procedure
1.
Verify that a Megger test was performed to the motor and its cables. This test should be carried
when the HRVS-DN is not connected to the motor.
2.
Verify that low voltage Test Harn`ess and cables are disconnected and removed.
3.
Verify that all 6 Gain dip switches on the fiberoptic PCB (PC2055) are set to ON.
4.
Enter MAIN & PROTECT. parameters. set:
RATED LINE VOLT. – As indicated on the HRVS-DN label
STARTER FLC – As indicated on the HRVS-DN label
MOTOR FLA – As indicated on the medium voltage motor label.
RATED MOTOR PWR – As indicated on the medium voltage motor label.
SERVICE FACTOR – As indicated on the medium voltage motor label.
Browse all the way down until you see the message: STORE ENABLE MAIN & PROTECT.
Press the Store button and wait for the message: DATA SAVED OK.
5.
Enter START parameters, set the parameters as required for the medium voltage motor.
If no other data is available, leave all parameters in their default values.
Verify that NUMBER OF STARTS parameter is set to 1.
Remember ! Do not start too often, especially if starting time is long. Prevent damage to both
motor and starter !
Browse all the way down until you see the message: STORE ENABLE START PARAMETERS.
Press the Store button and wait for the message: DATA SAVED OK.
6.
Enter STOP parameters.
If Soft Stop process is required it is recommended to use same SOFT STOP CURVE as SOFT
START CURVE.
Set DEC. TIME
If soft stop is not required, set Deceleration time (DEC. TIME) to minimum value (0 seconds).
Browse all the way down until you see the message: STORE ENABLE STOP PARAMETERS.
Press the Store button and wait for the message: DATA SAVED OK.
7.
Verify that all other parameters are setting properly for the application.
8.
Return the screen to the current display (first currents reading screen is in % OF MOTOR FLA).
9.
Be sure to know where an Emergency stop button is located, so you can stop immediately if
needed.
10.
It is strongly recommended that another person stand near the motor and have cellular (or other)
contact with you. He should be authorized to stop immediately (if a remote stop button is
available) or to ask you to immediately stop in any case where an unusual mechanical noise is
heard.
11.
During the entire starting time you should continuously read the three currents as shown on the
starter’s display. They should show, more or less same values.
12.
If the currents are significantly different - STOP IMMEDIATELY. Do not wait the total start time
until a trip occurs.
13.
In any problem occurs, look at the following troubleshooting instructions.
14.
It is strongly recommended to go back to the low voltage test if in doubt.
15.
After successful starting, with real load, set MAX START TIME (in START PARAMETERS
page) to few seconds above the actual time seen in the STATISTICAL DATA page, to prevent
starter and motor overheating if load is increased and motor cannot start.
