Voltech AT3600 - Page 89

VOLTECH AT3600 USER MANUAL CREATING THE PROGRAM
TEST PROGRAM EDITOR VPN 98 - 024 PAGE 3.3.17.
Where:
nom dB = the nominal value for the [ dB ] limits
neg dB = the negative error for the [ dB ] limits
pos dB = the positive error for the [ dB ] limits
nom = the nominal value for the [ % ] limits
neg% = the negative percentage error for the [ % ] limits
pos% = the positive percentage error for the [ % ] limits
min = the minimum value for the [ > < ] limits
max = the maximum value for the [ > < ] limits
low = the minimum value for the [ > ] limit
upp = the maximum value for the [ < ] limit
CONVERSION BETWEEN LIMIT TYPES FOR THE TESTS TR AND TRL
New Conversion Previous
%
neg%
pos%
pri ← #np
sec ← #ns
← (δnp / #np + δns / #ns)
← (δnp / #np + δns / #ns)
#
#
δnp
δns
#np ← pri ∗ K
#ns ← sec ∗ K
← #np ∗ (|neg%| + pos%) / 4
← #ns ∗ (|neg%| + pos%) / 4
%
where
pri = the primary ratio number for the [ % ] limits
sec = the secondary ratio number for the [ % ] limits
neg% = the negative percentage error for the [ % ] limits
pos% = the positive percentage error for the [ % ] limits
#np = the number of primary turns for the [ # ] limits
#ns = the number of secondary turns for the [ # ] limits
δnp = the ± error number of primary turns for the [ # ] limits
δns = the ± error number of secondary turns for the [ # ] limits
K = a factor to make #np and #ns whole numbers in the range 1 to
99999
Notes
1. The conversions in the above tables are written in a form to make it easier for
you to understand the conversion process; they are not intended to be exact
mathematical formulae.
2. Some changes in the tables above are not reversible.
For example, after you have changed from a > < limit which has two values to a
> limit which has only one, changing back will not give the original values
again.