ABB SYN 5201 Operating Instructions Manual page 98

Operating Instructions
abb
ABB Switzerland Ltd
Template: CHIND Techn doc stand, A4 P de, R1.DOT; Filename: 3BHS109762E01 D.doc; Print: 12/6/2011 5:48:00 PM; Save: 12/1/2011 2:37:00 PM; CHIND No. 3BHS109763 ZAB D14 Rev. -; I-Q
Angle error
(switches too early)
Possible causes:

t on set too high
  -measuring incorrect (  Offset
set incorrectly or in extreme
cases phase error)
Angle error
(switches too late)
Possible causes:

t on set too low
  - measuring incorrect (  Offset
set incorrectly or in extreme
cases phase error)
Slip too big/angle error
Possible causes:

smax set too high

The setting values for the two
channels must be matched to
one another (synchrocheck
release must be given before
the command is given, i.e.
angle window must be wider)
Voltage difference
Possible causes:
  Umax set too high

Measuring error (actual value
calibration)
Document No Art Part
3BHS109762 E01
SYN 5201/SYN 5202
Language Revision page
en D 98