TAVRIDA ELECTRIC Rec15/25 Al1 5p, User Manual, Page: 58 / 136

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5.1 No-load Tests
ATTENTION. Before powering the main line, the OSM should be in the OPEN position. The OSM shall be
closed via the MMI only after the no-load tests are performed.
Powering the Protection Device 5.1.1
Switch on the battery switch. Make sure that local time and date are correct. If date, time or both are
incorrect
connect to the RC via USB, Bluetooth or TDI (see “6.5. Other RC5_4 Control Options” for details)
and synchronize date and time on your computer with the RTC of the RC using TELARM. Date and time is
visible at the MMI screen.
Date and time synchronization procedure:
TELARM->On-line->Synchronize date and time
Date and time setup via MMI:
CPM Main Menu -> Control Data -> Set Date and Time
After that the commissioning engineer should make sure that the MMI menu navigation is OK, indication on
the MMI is OK.
RC5 Power Supply Check 5.1.2
For each of the conditions described below check that MMI displays no errors and MMI LED function
(Lockout LED, Mode
– Local LED, State – Open LED, On or Off LED of each protection button, Active group
– 1 LED)

Battery switch is OFF, AC supply switch is ON;

Battery switch is ON, AC supply switch is OFF
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;

Battery switch is ON, AC supply switch is ON.
NOTE: Up to 60 s might be required for the RC5_4 circuits energizing.
Checking CVCS Coefficients 5.1.3
Check that the CVCS coefficients in the RC5_4 settings correspond to the RTC.
CVCS coefficient indications:
MMI -> Main menu -> Settings -> System -> Measurement
To correct coefficients, connect to the RC via TELARM:
TELARM -> On-line -> Rec -> System settings -> System -> ME settings
Change “Wires to terminal connection” setting. Check that all other System settings in TELARM are correct
for the particular device. How to upload settings is described in “6.6. Settings Modifications”.
Checking Phase Sequences 5.1.4
After powering the main line at the OSM OPEN state, the commissioning engineer should perform the
PHASE SEQUENCE check-up. The negative sequence voltage (U2) should be less than 1kV.
Negative voltage sequence indication:
MMI -> Main menu -> Indication data -> Measurement -> U2
If the negative sequence voltage is observed, it is recommended to change the software setting (changing
phase sequence System-Phase sequence).
Changing phase sequence:
TELARM -> On-line -> Rec -> System settings -> System -> Configuration -> Wires to terminal
connection
Change “Wires to terminal connection” setting. Check that all other System settings in TELARM are correct
for this particular device. How to upload the System settings is described in the “Operation” chapter.
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If rechargeable battery is available.