Elcon SA10A - Calibration and Functional Tests

Page 23 (40)
Rev 1 2018-03-21 www.elcon.se
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7.2 CALIBRATION AND FUNCTIONAL TEST.
Calibration and functional test is done from the control unit window in
To open this window in .
Click function Control unit from the menu Service.
Select tab Analog In.
7.2.1 CHECK VOLTAGE MEASUREMENT INPUTS UC, UK, UL, UM.
Connect a stable power supply of 200 V DC in parallel to
a calibrated reference voltmeter. Described as (Ref.)
Verify in BTS11 that each input is
within the specification below.
Voltage measure: Range 0-
300 V DC. Accuracy < 1% or  1V DC
Range 0 - 250 V AC. Accuracy < 2% or  2V AC
Analog resolution: 12 bits. Resolution about 0.225V DC / Bit.
If the values are near the limit of accuracy, calibration is necessary. See.
7.3.1 Calibration wizard for voltage measurement inputs Uc, Uk, Ul, Um.
To verify positive measurement connect.
DC Supply +  Uc, Uk, Ul, Um, +V (Ref.).
DC Supply -  COM (COILS), COM (AUX), COM
(Ref.).
To verify negative measurement connect.
DC Supply -  Uc, Uk, Ul, Um, +V (Ref.).
DC Supply +  COM (COILS), COM (AUX), COM
(Ref.).