Toshiba GR-200-5 Instruction Manual page 332

ATO special relays for commands
2.27.3
The user can customize ATO judgement scheme using ATO relays: UVATO1/UVATO2 and
OCCATO.
Undervoltage relay (UVATO1)
(i)
UVATO1 relay will operate by entering voltages: V L1 , V L2 , and V L3 . The UVATO1 threshold
can be set with setting [UVATO1]. The UVATO1 relay is characterized in Figure 2.27-4.
Undervoltage relay (UVATO2)
(ii)
UVATO2 relay can operate by entering voltage: V s . The UVATO2 threshold can be set with
setting [UVATO2]. The UVATO2 relay is characterized in Figure 2.27-5.
Overcurrent relay (OCATO)
(iii)
OCATO relay can operate by entering currents: I L1 , I L2 , and I L3 . The OCATO threshold can
be set with setting [OCATO]. The OCATO relay is characterized in Figure 2.27-6.
0
Figure 2.27-4 UVATO1 relay characteristic
Setting[UVATO2]
0
Figure 2.27-5 UVATO2 relay characteristic
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Setting[UVATO1]
Voltage
(V , V V
L1 L2 and L3)
Voltage (Vs)
6F2T0207 (0.01)
GRE200 (5,6)