Superior Electric STABILINE WHR34 S Series, Instructions Manual

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6.2.3. Manual Bypass Switch (S3)
This two-position switch, in the REGULATOR position,
provides conditioned power from input source through
the regulator to the load. In the BYPASS position the
input power and load are disconnected from the
regulator’s circuits and connects together directly. THIS
IS A NON-LOAD BREAK SWITCH AND INPUT
POWER MUST BE OFF BEFORE OPERATING. On
three phase units the neutral is not switched.
Caution: This switch is designed to provide
unconditioned power to the load if a fault condition
occurs.
It does not remove all live power from the
enclosure. The manual bypass switch does not bypass
the input circuit breaker or zig-zag transformer if so
equipped.
6.2.4. Ammeters (M1)
An analog ammeter displays load current for each
phase. Each meter indicates the load current within 2%
of the meters full range.
6.2.5. Frequency meter with alarm contacts (M2)
Frequency meter displays the source frequency and
provides alarm contacts for values outside the user's
settable limits. Lower and upper limit trip relays are
factory set at 45 Hz and 65 Hz respectively. If the
frequency becomes lower or higher than user selected
values, an output relay is energized. The relay is
equipped with a form “C” normally open / normally
closed contact available for customer use.
If a circuit breaker with a trip coil is ordered with the
frequency meter, the system is configured to
automatically trip the breaker when a limit is exceeded.
6.2.5.1. Frequency Meter Instructions
The frequency meter owner’s manual is included with
the literature sent with the unit. The user can change
the meters setting without storing them in memory. If
the user changed the factory settings, and did not
select the store option, the factory setting can be
reinstated by pressing both RECALL buttons at the
same time. The stored factory settings are shown in the
table below.
To return the stored settings to the factory defaut, tap
the ENTER key to go to the next feature then use SET
and ADVANCE keys to change the setting to those
shown below. When the display shows Store, tap the
Enter key to lock the setting into memory. If no other
setting was stored after this procedure, pressing both
RECALL keys will return the meter to these settings.
Feature Setting
Func Freq
Scale A / SC 2.00000
Offset 000000.
Range FFFF.FF
Slope A Pos
Sp lo 000045
Sp hi 000065
Gate t 01.30
Conf 1 no setting required
Conf 2 no setting required
No store Store
A front and rear view of the frequency meter is shown
below with the N.O. alarm contacts in parallel. The
alarm contacts are connected to TB4 as follows:
1 – HI relay Com 4 - LO relay COM
2 – HI relay N.O. 5 - LO relay N.O.
3 – HI relay N.C. 6 - LO relay N.C.
Frequency Meter
6.2.6.
Input Range Alarm (K1)
Input voltage range alarm closes a N.O. solid state
contact when the regulator is providing maximum
voltage correction. This option senses regulator motor
drive end of travel limit switch operation.
6.2.7. Phase Loss, Phase Reversal Alarm
Contacts
(A3)
Provided for three phase units only, this option senses
the three phase voltage and operates a relay (form “C ”
normally open / normally closed contact) when any
phase voltage is lost, or if the voltage sequence of the
power is reversed.
If an input circuit breaker with a shunt trip is ordered, the
system is configured to automatically trip the breaker when
there is a phase reversal. The system might not trip the
breaker when there is a phase loss because power to operate
the shunt trip may not be available.
Alarm circuit contacts provided with the Frequency Trip
Meter, Input Voltage Range Alarm and Phase Loss - Phase
Reversal options are rated 5 amps 240 volts AC
.