Toshiba GR 200 Series, Instruction Manual

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6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 674 -
Synchronizing check for different network (SYNDIF)
The Synchronizing check function (SYNCHK) is provided for checking for the presence of
voltage or the voltage/frequency-variance when connection between two parts of a network is
required. The SYNCHK function is of benefit where the “Double position controller with
synchronizing-check (DPSY†)” function is used for connection between two parts of a network.
This is because operation of the DPSY function to close the circuit breaker is inhibited until
the SYNCHK function gives permission. The SYNCHK function is made up of two group
functions (SYNCHK01 and SYNCHK02‡). The group function consists of two logic elements:
the former part is to check for the voltage-presence (or absence) on an incoming line and a
running line; the latter part is to check the synchronizing condition between two energized
lines.
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Note: The implementation of particular features is dependent upon the selection of
hardware and the configuration of functions. Several IED models do not support certain
features. To determine whether a particular feature has been implemented within an IED,
identify the IED ordering number; and check the order number for the “G&T position” whilst
referring to the comparison table below. For more information, see
Appendix: Ordering
.
Table 4.6-1 Comparative table in respective ordering numbers
Sec. Feature
Ordering No. at “G&T”
31 32
– Main features NA
✓
– Number of functions – 2
✓
: Applicable NA: Not applicable