2.8.3.1
System Meters
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NOTE: Delete maintenance bypass metering functions
if there is no maintenance bypass.
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Meters shall have 1 percent accuracy and shall be digital type (minimum 4
significant digits). ac voltages shall be measured as true RMS voltages.
The following functions shall be monitored:
a.
Output voltage, phase-to-phase and phase-to-ground (all three
phases).
b.
Output current, all three phases.
c.
Output frequency.
d.
Bypass voltage, phase-to-phase and phase-to-ground (all three
phases).
e.
Output kilowatts.
f.
Output kilovars.
g.
Output kVA.
h.
Output kilowatt-hours, with demand attachment.
i.
Maintenance bypass voltage, phase-to-phase and phase-to-ground
(all three phases).
2.8.3.2
System Controls
The system cabinet shall include the following controls:
a.
Lamp test/reset.
b.
Alarm test/reset.
c.
Voltage adjustment potentiometer.
d.
Emergency off pushbutton with protective cover.
e.
UPS/bypass transfer selector switch.
f.
Static switch enable/disable selector switch.
g.
Control power off switch.
2.8.3.3
System Alarm Indicators
The system control panel shall contain indicators for the following
additional alarm items. Any one of these alarm conditions shall also
activate the audible alarm. Each new alarm shall register without
affecting previous alarms.
SECTION 16265A
Page 30
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