11
Save the current test results to the local computer or save it to the
external USB disk.
Tip: the data saved to the USB is in WORD format, and can be directly
edited or printed with OFFICE.
XI.Matters Needing Attention
For transformers with multiple taps, the input of rated high and low voltage
voltage, tap spacing and rated gear is to enable the test results to
automatically calculate the error value and tap switch location.
19 archives of transformer on-load tap-changer is, if the 9, 10 and 11 are
the same values, instrument input rated tap should be input when 9, at this
time 12 points to a later, instrument display tapping position is smaller than
actual position 2.
The instrument tapping position setting according to the high side pressure
regulating design, is to assume that one point as the highest voltage range,
if the voltage reverse design or tap-changer in low voltage side of
transformer, display tapping position and the actual tap position of the horse
Three-phase transformer variable than the plate of refers to the ratio of the
different voltage winding of line voltage, therefore, the transformer in
different connection mode, its strain ratio and the number of turns than to
have the following relations: the primary and secondary side of the
connection of the same voltage of three-phase transformer ratio is equal to
the number of turns ratio; Primary side and secondary side of the
connection is not at the same time, Y - d wiring of turns ratio is equal to the
variable ratio, divided by the square root of
3
- Y connection of turns ratio
is equal to the ratio is multiplied by the square root of
3
.
