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Appendix B: HECO
Appendix B: HECO
Appendix B-1: Full Frequency Ride-Through Settings for O'ahu, Hawai'i Island, and Maui (HECO A)
System Frequency
Operating Region
Default Settings (Hz)
Over-Frequency 2
(OFR2)
Over-Frequency 1
(OFR1)
Normal Operation
High (NORH)
Normal Operation
Low (NORL)
Under-Frequency 1
(UFR1)
Under-Frequency 2
(UFR2)
Appendix B-2: Full Frequency Ride-Through Settings for Moloka'i and Lana'I (HECO B)
System Frequency
Operating Region
Default Settings (Hz)
Over-Frequency 2
(OFR2)
Over-Frequency 1
(OFR1)
Normal Operation
High (NORH)
Normal Operation
Low (NORL)
Under-Frequency 1
(UFR1)
Under-Frequency 2
(UFR2)
Appendix B-3: Full Voltage Ride-through Settings for O'ahu, Hawai'i Island, Maui, Moloka'i, and Lana'i
Voltage at Point of
Operating Region
Interconnection
(% Nominal Voltage)
Over-Voltage 2
(OVR2)
Over-Voltage 1
120 ≥ V > 110
(OVR1)
Normal Operation
110 ≥ V >100
High (NORH)
Normal Operation
100 > V ≥ 88
Low (NORL)
Under-Voltage 1
88 > V ≥ 70
(UVR1)
Under-Voltage 2
70 > V ≥ 50
(UVR2)
Under-Voltage 3
(UVR3)
Minimum Range
of Adjustability
f > 64.0
60.1 - 65
64.0 ≥ f > 63.0
60.1 - 65
63.0 ≥ f > 60.0
Not Applicable
60.0 ≥ f ≥ 57.0
Not Applicable
57.0 > f ≥ 56.0
57 - 59.9
56.0 > f
53 - 57
Minimum Range
of Adjustability
f > 65.0
60.1 - 65
65.0 ≥ f > 63.0
60.1 - 65
63.0 ≥ f > 60.0
Not Applicable
60.0 ≥ f ≥ 57.0
Not Applicable
57.0 > f ≥ 50.0
57 - 59.9
50.0 > f
50 - 57
Ride-Through
Until
No Ride
V >120
Through
0.92 seconds
Indefinite
Indefinite
20 seconds
10 - 20*
seconds
No Ride
50 > V
Through
Ride-Through
Until
Permissive Operation
No Ride
Through
Mandatory Operation
20 seconds
Continuous Operation
Indefinite
Indefinite
Continuous Operation
20 seconds
Mandatory Operation
No Ride
Permissive Operation
Through
Ride-Through
Until
No Ride
Permissive Operation
Through
Mandatory Operation
20 seconds
Continuous Operation
Indefinite
Indefinite
Continuous Operation
20 seconds
Mandatory Operation
No Ride
Permissive Operation
Through
Maximum Trip
Operating Mode
Time
Cease to
0.16**
Energize
seconds
Mandatory
1 seconds
Operation
Continuous
Operation
Indefinite
(Volt-Watt)
Continuous
Indefinite
Operation
Mandatory
21 seconds
Operation
Mandatory
11 - 21*
Operation
seconds
Permissive
0.5 seconds
Operation
104
Maximum Trip
Operating Mode
0.16 seconds
(Freq-Watt)
21 seconds
(Freq-Watt)
Not Applicable
(Freq-Watt)
Not Applicable
21 seconds
0.16 seconds
Maximum Trip
Operating Mode
0.16 seconds
(Freq-Watt)
21 seconds
(Freq-Watt)
Not Applicable
(Freq-Watt)
Not Applicable
21 seconds
0.16 seconds
Return To Service - Trip
% Nominal
Time Delay (s)
Voltage
110 ≥ V ≥ 88
300 - 600*
110 ≥ V ≥ 88
300 - 600*
Not Applicable
Not Applicable
Not Applicable
Not Applicable
110 ≥ V ≥ 88
300 - 600*
110 ≥ V ≥ 88
300 - 600*
110 ≥ V ≥ 88
300 - 600*
Time
Time
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