Toshiba GR200 Series Instruction Manual page 403

SYN1-Angle = phase difference between V B and V L , set by [SYN1-Angle]
SYN2-Angle = phase difference between V L2 and V L , set by [SYN2-Angle]
SYN1-df = value of frequency difference between Bus-bar and Line, set by [SYN1-df]
SYN2-df = value of frequency difference between Line2 and Line, set by [SYN2-df]
T_SYN1 = setting of synch check timer (second) [T_SYN1]
T_SYN2 = setting of synch check timer (second) [T_SYN2]
Table 2.25-5 VCHK synchronism setting
Scheme switch
SYN1-dV
SYN1-df
SYN1-Angle
SYN1-dfEN
SYN2-df
SYN2-Angle
SYN2-dfEN
VCHK-OVL
VCHK-UVL
VCHK-OVL2
T_SYN1
T_SYN2
The VCHK can have the decision of synchronism between the running voltage and the
incoming voltage when the following items (i) to (iv) are satisfied:
Voltage magnitudes
(i)
The magnitude of the running voltage and the incoming voltage are greater than
the SYN1 and SYN2 settings:
For SYN1 setting:
For SYN2 setting:
Voltage difference
(ii)
The differences of the magnitude between the running voltage and the incoming
voltage (ΔV1 and ΔV2) are smaller than the SYN1 and SYN2 settings:
For SYN1 setting:
For SYN2 setting:
Note: The VCHK calculation should be achieved correctly even if respective
rating voltages in V B , V L , and V L2 are not identical. Thus, the VCHK
function has a matching factor (K) designed to adjust the respective rating
voltages when they are not identical. The matching factor (K) is calculated
automatically using the setting values of VCT ratios; the K is generated
Set Comment
0 - 150 Difference voltage for the checking SYN1
0.01 - 2.00 Difference frequency for the checking SYN1
0 - 75 Difference angle for the checking SYN1
Off/ On Enabling for df checking in SYN1
0.01 - 2.00 Difference frequency for the checking SYN2
0 - 75 Difference angle for the checking SYN2
Off/ On Enabling for df checking in SYN2
10 - 150 Voltage for the checking Live-Line
10 - 150 Voltage for the checking Dead-Line
10 - 150 Voltage for the checking Live-Line2
Voltage check time "SYN1(Live-Bus & Live-
0.01 - 100.00
Line & Synchro.)"
Voltage check time "SYN2(Live-Line2 & Live-
0.01 - 100.00
Line & Synchro.)"
V B ≥ [VCHK-OVB] and V L ≥ [VCHK-OVL]
V L2 ≥ [VCHK-OVL2] and V L ≥ [VCHK-OVL]
ΔV1 ≥ | V B − K × V L | ≤ [SYN1-dV]
ΔV2 ≥ | V L2 − K × V L | ≤ [SYN2-dV]
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6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)