ABB Zenith ZTG 30 Operation, Maintenance And Installation Manual page 45

Parameters (continued)
Device Parameters (continued)
Voltage & Frequency Setpoints
S1 Setpoints
S2 Setpoints
Generator Exercisers
Exerciser 1 / 2 / 3 / 4
Defines the voltage and frequency limits for
source being acceptable. Source has an
anomaly when measured voltage/frequency
goes out of range drop-out lower/drop-out
Upper. Source becomes acceptable when
measured voltage/frequency goes back in
range pick-up lower/pick-up higher.
S1 Drop-out Upper Threshold 102...120 % Un (115* % Un)
Voltage
Lower Threshold 70...98 % Un (85* % Un)
S1 Pick-up Upper Threshold 101...119 % Un (114* % Un)
Voltage
Lower Threshold 71...99 % Un (86* % Un)
S1 Drop-out Upper Threshold 101...120 % fn (115* % fn)
Frequency
Lower Threshold 80...99 % fn (85* % fn)
Upper Threshold 100.5...119.5 % fn
S1 Pick-up
Frequency
Lower Threshold 80.5...99.5 % fn (86* % fn)
S2 Drop-out Upper Threshold 102...120 % Un (115* % Un)
Voltage
Lower Threshold 70...98 % Un (85* % Un)
Upper Threshold 101...119 % Un (114* % Un)
S2 Pick-up
Voltage
Lower Threshold 71...99 % Un (86* % Un)
S2 Drop-out Upper Threshold 101...120 % fn (115* % fn)
Frequency
Lower Threshold 80...99 % fn (85* % fn)
Upper Threshold 100.5...119.5 % fn
S2 Pick-up
Frequency
Lower Threshold 80.5...99.5 % fn (86* % fn)
Switch and generator functioning can be tested
automatically and also periodically by using four
independent exerciser events. Test on load
function starts the generator and transfers the
load to it. Test off load function only starts the
generator for the duration of the event.
Overlapping events are prioritized, event 1 has
the highest priority.
Status Disabled*
Non-periodic
Daily
Weekly
Bi-weekly
Monthly
Yearly
*Default
(114* % fn)
(114* % fn)
Continued on the next page
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