GEK-105593C
8
To protect against loss of polarization voltage, the system includes adjustable fuse-failure logic. This logic
allows to either block the operation of the units or to convert the directional units into non-directional. The
selection is done through a setting. The fuse failure function operates on two different conditions (OR logic):
- Operation of undervoltage detectors (adjusted at 3.5 volts)
- Activation of a digital input connected to the voltage MCB.
2.1.3. VOLTAGE UNITS
•
Phase over and under voltage:
•
Under voltage:
27P
•
Over voltage:
59P
The three-phase under and overvoltage units operate under conditions of under or over voltage (depending
on the unit) in any of the three phases. Both units are adjusted and operate on phase-to-phase voltage
values, calculated from the phase-to-ground voltages applied to the unit.
•
Ground overvoltage:
•
High Setting:
59 NH
•
Low Setting:
59 NL
There are two ground overvoltage units. The SMOR7000 model has a dedicated open-delta input. In all
other models the voltage is calculated from the phase to ground inputs.
2.1.4. FREQUENCY UNITS
•
Underfrequency :
81U
•
Overfrequency:
81O
The under and over frequency units are measured on one phase (phase B).
Summary of Contents for SMOR-B GEK 105593C
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Page 25: ...GEK 105593C 20 FIGURE 5 RECLOSER STATES DIAGRAM 226B2200H1 SUMMARISED ...
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Page 88: ...GEK 105593C 83 FIGURES FIGURES FIGURES FIGURES ...
Page 89: ...GEK 105593C 84 FIGURE 1 PANEL DRILLING DIMENSIONS FOR 19 RACK MODELS 226B6086H10 ...
Page 91: ...GEK 105593C 86 FIGURE 3 INVERSE CHARACTERISTIC OPERATING CURVE 226B7414H1 ...
Page 92: ...GEK 105593C 87 FIGURE 4 VERY INVERSE CHARACTERISTIC OPERATING CURVE 226B7414H2 ...
Page 93: ...GEK 105593C 88 FIGURE 5 EXTREMELY INVERSE CHARACTERISTIC OPERATING CURVE 226B7414H3 ...
Page 94: ...GEK 105593C 89 FIGURE 6 RECLOSER PROGRAM FLOWCHART 226B2200H1 ...
Page 95: ...GEK 105593C 90 FIGURE 7 FRONT VIEW FOR 19 RACK MODELS 226B7412H9 ...
Page 96: ...GEK 105593C 91 FIGURE 8 FRONT VIEW FOR 1 2 RACK MODELS ...
Page 97: ...GEK 105593C 92 FIGURE 9 EXTERNAL CONNECTIONS FOR 19 MODELS 189C4101H1 ...
Page 100: ...GEK 105593C 95 FIGURE 13 REAR VIEW FOR 19 MODELS 226B7412H10 ...
Page 102: ...GEK 105593C 97 FIGURE 15 DIMENSIONS DIAGRAM FOR 19 MODELS 226B6086H10 ...
