No. 2-014 (KATC-V)
Page 7
PM-19-10-004, Rev F
ACCURACY CLASS), press HOLD/PRINT
— then reduce the volt-
age to zero. This data should be compared to any One-to-One data
originally taken with the equipment. Errors in excess of ±0.025% on
ratio or ±2 minutes on phase angle should be investigated.
5.
Record the data. If you have the RS-232C or Printer option, the data
is automatically sent to the output device upon pressing
HOLD/PRINT a second time.
6.
Press RESET to clear the HOLD status.
12B
4.4 Alarm Conditions
1.
If the test voltage exceeds 159.5 volts or the error voltage (the
difference in secondary voltages of the precision transformer and the
transformer-under-test) exceeds 5 volts, the display will indicate
REDUCE VOLTAGE, THEN RESET,
the audible alarm will sound,
and power will be removed from the loading system
— provided that
you have connected the "interlock" feature properly. The same re-
sponse will occur if test voltage is applied too quickly. Excessive er-
ror voltage can result if the TUT is connected with wrong polarity or if
the wrong ratio is chosen.
2.
The following messages indicate a malfunction within the KATC-V
and are discussed in the Troubleshooting and Repair Section (5).
No zero crossing (LOW) (or HIGH)
EOC Does not go low (or high)
3.
If the limits of RATIO ERROR, PHASE ERROR, or ACCURACY
CLASS (as defined under Specifications above) are exceeded, over-
range arrows (^^^) will appear in the appropriate places on the dis-
play. This will
not
trigger the alarm.
4B
5. Troubleshooting and Repair
You Can Contact Knopp At:
(510) 653-1661