Trinity ACCUVAR, Руководство пользователя, Страница: 12 / 27

pg. 12
TRINITY
ACCUVAR - Operational Manual
5. Connect the two wires from the Y-phase capacitor CT to terminals marked CM & CL
such that S1 from CT goes to CM on the unit.
6. Switch on the three phases supply. Unit will power on from these three phases supply.
7. First of all, user should program the following parameters of the unit: CT RATIO FOR
MAIN CTs, CT RATIO FOR CAPACITOR CTs, ALARM MODE. Refer Operational
Details in the next section. The proper operation of the relay can commence only after
these three parameters are defined.
8. Ensure that all capacitors are in the circuit i.e. all fuses link pushed in. Give Autosense
(Refer Operational Details in the next section). ACCUVAR will first display
'AUTOSENSING' and as it switches on one bank at a time and also, displays the bank
size of every stage. After AUTOSENSING is completed, the unit will Reset.
9. In case user did not connect proper voltage and current I/p as described in second
point, Phase sequence detection will help. In order to detect proper phase sequence,
the load current should have a value greater than zero. The unit will switch ON and
OFF the bank selected by user in REF_BANK, in order to perform auto correct. If
load is nonlinear or too many sudden changes occur in the load during this process,
it may not be able to correct the connection. In this case, user must disable non linear
load temporarily and repeat the process or can manually enter the phase sequence
value. Make sure to connect three phase capacitor bank on selected REF_BANK
number.
10.
Now, the unit is ready for the control action after a 1 minute delay.
Capacitor Panel Connection Scheme