ABB Zenith ZTG 30, Operation, Maintenance And Installation Manual

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Parameters (continued) *Default
Device Parameters (continued)
Voltage & Frequency Setpoints 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 Setpoints
S1 Drop-out
Voltage
Upper Threshold 102...120 % Un (115* % Un)
Lower Threshold 70...98 % Un (85* % Un)
S1 Pick-up
Voltage
Upper Threshold 101...119 % Un (114* % Un)
Lower Threshold 71...99 % Un (86* % Un)
S1 Drop-out
Frequency
Upper Threshold 101...120 % fn (115* % fn)
Lower Threshold 80...99 % fn (85* % fn)
S1 Pick-up
Frequency
Upper Threshold 100.5...119.5 % fn
(114* % fn)
Lower Threshold 80.5...99.5 % fn (86* % fn)
S2 Setpoints
S2 Drop-out
Voltage
Upper Threshold 102...120 % Un (115* % Un)
Lower Threshold 70...98 % Un (85* % Un)
S2 Pick-up
Voltage
Upper Threshold 101...119 % Un (114* % Un)
Lower Threshold 71...99 % Un (86* % Un)
S2 Drop-out
Frequency
Upper Threshold 101...120 % fn (115* % fn)
Lower Threshold 80...99 % fn (85* % fn)
S2 Pick-up
Frequency
Upper Threshold 100.5...119.5 % fn
(114* % fn)
Lower Threshold 80.5...99.5 % fn (86* % fn)
Generator Exercisers 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.
Exerciser 1 / 2 / 3 / 4
Status Disabled*
Non-periodic
Daily
Weekly
Bi-weekly
Monthly
Yearly