Basler Electric AVC63-7F - Manual

Publication
9302800994
Revision
D
Instructions
Date
03/12
Copyright
2012
www.basler.com
+1 618.654.2341 (USA)
[email protected]
Model AVC63-7F
Description Voltage Regulator
INTRODUCTION
The Basler AVC 63-7F Voltage Regulator is a potted unit
contained in a plastic case. The regulator controls the dc
exciter field power of conventional, 50 or 60 Hz brushless
generators that have a 63 Vdc exciter field to regulate the
generator output voltage.
Regulation is provided by sensing the generator output
voltage, converting it to a dc signal, and comparing the
signal to a reference voltage signal. An error signal is
developed and used to control the dc field power in order to
maintain a constant generator output.
SPECIFICATIONS
DC Output Power
7 Adc at 63 Vdc maximum continuous with a 240 Vac input.
Exciter field DC Resistance
9.0 Ω minimum.
AC Power Input
170 to 305 Vac, single-phase, 50/60 Hz.
Burden: 900 VA maximum at 240 Vac power.
AC Sensing Voltage
380 to 480 Vac, single-phase, 50/60 Hz.
Burden: 5VA.
Voltage Adjust Range
340 to 528 Vac using the internal voltage adjust. The
external voltage adjust provides a ±10% adjustment of the
nominal value determined by the internal voltage adjust.
Regulation Accuracy
± 0.25%
Voltage Drift
<±1% voltage variation for a 50°C (122°F) change.
Response Time
<16 ms
Frequency Compensation
Refer to Figure 1.
Voltage Buildup
Internal provisions for automatic buildup from generator
residual voltage as low as 6 Vac at 25 Hz.
Power Dissipation
35 W maximum.
Paralleling Provisions
CT input for customer supplied 5A nominal CT. Adjustable
droop from 0 to 6% with 5A input at 0.8 power factor. CT
input burden is 2.5 VA.
Temperature
Operating:
–40 to +60°C (–40 to +140°F)
Storage: –65 to +85°C (–85 to +185°F)
Vibration
Withstands 1.2 G at 5 to 26 Hz; 0.036” double amplitude at
27 to 53 Hz; 5 G at 53 to 1,000 Hz.
Shock
Withstands up to 15 G in each of three mutually
perpendicular axes.
Agency Recognition
Certified per CSA Standard C22.2 No. 14
Weight
482 g (17 oz) net
INSTALLATION
Mounting
The regulator may be mounted in any position. Refer to the
outline drawing (Figure 2). The regulator may be mounted
directly on the generator set using ¼” hardware. Select the
proper hardware to withstand any expected
shipping/transportation and operating conditions.
Interconnection
Refer to Figures 3, 4, and 5.
1. Connect a jumper from COM to the 50 Hz terminal for
50 Hz operation, or leave the two terminals
unconnected for 60 Hz operation.
2. If an external voltage adjust control is being used,
connect the potentiometer to terminals 6 and 7 as
shown. If not, connect a jumper between terminals 6
and 7.
3. Connect the exciter field to terminals F+ and F-. Be
sure to observe polarity.
4. Connect the input power to the generator stator to
provide power to terminals 3 and E3/4. Fuse both
leads. Install the optional shutdown switch, if desired.
5. Connect the sensing input to E1 and E3/4. The
sensing should be connected “line-to-line”.
Parallel Compensation
When it is required to operate the regulator in parallel with
an isolated or utility bus, in addition to the regulator
provisions, a 2.5 VA current transformer (CT) is required
(See Figures 3 and 5). This CT is connected in a generator
line and should deliver from 3 to 5 amperes secondary
current at rated load.
The phase relationship of the CT signal to the regulator
sensing voltage must be correct or the system will not
parallel properly. The CT must be installed in the line of the
three-phase generator that does not supply sensing to the
regulator.
Figures 5 and 6 show the correct CT polarity for A-B-C
phase rotation sequence. If the phase rotation sequence is
A-C-B, the CT secondary leads must be interchanged.
Reactive Droop Compensation
For reactive droop compensation, connect the CT to its
respective regulator as shown on Figures 5 and 6.
A unit-parallel switch shorts the parallel CT secondary to
prevent any droop signal from being injected into the
regulating system during single unit operation. The switch
may not be required on parallel droop compensation
applications where a voltage drop is not objectionable.