Basler Electric VR63-4A-UL User Manual

Instructions

www.basler.com

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VR63-4A/UL

+1 618.654.2341 (USA)

Model

Part Number

9166800995

INTRODUCTION

The VR63-4A/UL voltage regulator is designed for use on
50/60 Hz brushless generators. Regulator features include
frequency compensation, overexcitation shutdown, a solid­state buildup circuit, and EMI filtering.

SPECIFICATIONS

Power Input

Range: 190 to 240 Vac, ±10%,

1-phase
Frequency: 50/60 Hz
Burden: 500 VA

Sensing Input

Configuration: 1-phase
Frequency: 50/60 Hz
Range: 100 to 120 Vac, ±10%
Burden: 1 VA

Power Output

Ratings

Maximum Continuous: 4 Adc, 63 Vdc, 252 W
One Minute Forcing: 7 Adc, 100 Vdc, 700 W

DC Field Resistance Rating

Minimum: 15 Ω
Maximum: 100 Ω

Voltage Adjustment

90 to 132 Vac

Regulation Accuracy

Better than ±1% no load to full load.

Response Time

<1.5 cycles for a ±5% change in sensing voltage.

EMI Suppression

Internal electromagnetic interference filter (EMI filter).

Overexcitation Shutdown

Output power is removed under the following conditions:
Exciter field voltage exceeds 100 Vdc ±5 Vdc for a time
inversely proportional to voltage magnitude, or within 0.2
seconds if the exciter field voltage exceeds 135 Vdc
±5 Vdc.

Voltage Buildup

Internal provisions for automatic voltage buildup from
generator residual voltages as low as 10 Vac.

Power Dissipation

8 W maximum

Temperature

Operating: –40 to 60°C (–40 to 140°F)
Storage: –65 to 85°C (–85 to 185°F)

Vibration

Withstands the following:
2 to 26 Hz: 1.3 G
26 to 50 Hz: 0.036 inch double amplitude
50 to 500 Hz: 5.0 G

Shock

Withstands 15 G in each of three mutually perpendicular
planes.

Weight

0.88 lb (0.4 kg)

Agencies

CSA Approved
UL Recognized
GOST-R Certified

FUNCTIONAL DESCRIPTION

Frequency Compensation

The frequency compensation characteristic of Figure 1 is
used to improve system load pickup performance by
restraining voltage recovery until frequency has also
started to recover.

The regulator is shipped from the factory set at a 45-Hz
corner frequency for 50 Hz systems. For 60 Hz systems, a
55-Hz corner frequency is achieved by removing the
jumper from the HZ terminals.

Overexcitation Shutdown

If the exciter field voltage exceeds 100 Vdc ±5 Vdc, the
regulator automatically removes the field current after a
time delay. The time delay is inversely proportional to the
magnitude of the detected overvoltage condition up to the
135 ±5 Vdc point. Beyond 135 Vdc ±5 Vdc, the field
voltage is removed within 0.2 seconds. See Figure 2.

After shutdown, reset the regulator by decreasing the
voltage below 6 Vac either by stopping the prime mover or
by interrupting the regulator input with a reset switch for 2
seconds minimum.

INSTALLATION

Mounting

The regulator may be mounted on the generator in any
convenient position (optimum cooling occurs with the long
side of the regulator vertical). Refer to the drilling diagram
of Figure 3.

Exciter Field Power Circuit

Connect regulator terminal F+ to the brushless exciter field
terminal F+, and terminal F– to terminal F–.

CAUTION

The dc resistance of the exciter field must be
greater than or equal to 15 Ω and less than
100 Ω.

Power/Sensing Input Circuit

Connect as shown in Figures 4 and 5. Power for the
exciter field and regulator circuitry is derived from the
generator output or auxiliary winding. The operable power
input range is 190 to 240 Vac.

Publication

9166800995

Revision

E

Date

03/11

Copyright

2011

Instructions

Page

For sensing, single-phase voltage from the generator is

diagram to avoid interrupting field current

potential test equipment

ment could damage the semiconductors

connected between E1 and E4. Note that terminal 4 is
common to both power and sensing.

Fuses

It is recommended that 7 A, 250 V fuses with a high
interruption capability be installed per the interconnection
diagram in Figures 4 and 5.

CAUTION

Fuses must be installed per the interconnection

directly.

Voltage Adjust Rheostat (VAR)

The VAR control adjusts generator output voltage. Turning
the control clockwise increases voltage.

When using the remote voltage adjust rheostat (VAR), the
VAR wire on the regulator should be cut and the rheostat
connected to both ends. A 1 kΩ, ½ W resistor is adequate
for most applications. See Figures 4 and 5.

Accessory Equipment

Voltage Adjust Rheostat with a locking, slotted shaft for
remote mounting - Basler P/N 17724.

OPERATION

The following procedures are provided for VR63-4A/UL
setup and adjustments.

CAUTION

Meggers and high­must not be used. Incorrect use of such equip-

contained in the regulator.

Preliminary Setup

1. Verify that the voltage regulator specifications

conform with the generator system requirements.

2. Ensure that the regulator is connected to the

generator correctly. See Figures 4 and 5.

3. Install fuses per Mounting, Fuses.

4. Set the regulator VAR control fully CCW and the

remote VAR (if used) to the center position.

System Startup

1. Start the prime mover and bring up to rated speed.
Voltage should build up. If a minimum residual of
6 Vac is not present, perform field flashing.

2. Slowly adjust the VAR control CW until the generator
output voltage reaches nominal value. If used, adjust
the remote voltage adjust to set the generator output
to the exact value desired.

Adjustments (Field Flashing)

When the regulator is operated with the generator for the
first time, the polarity of residual magnetism may be
reversed or too small to achieve the necessary buildup
voltage for the regulator. If reversing the field connections
does not induce buildup, and the residual voltage is still
less than the specified value of 6 Vac, shut down the
prime mover and proceed with the following steps.

1. With the prime mover at rest, apply a dc source (not
grounded) of not more than 12 Vdc with Positive to F+
and Negative to F–, in series with a current-limiting
resistor of 3 to 5 ohms.

2. Allow approximately three seconds before removing
the dc source.

3. Start the prime mover and measure voltage at
regulator leads 3 and 4. If this voltage is greater than
6 Vac, voltage buildup should be successful. If less
than 6 Vac is measured, repeat the field flashing
procedure.

4. If repeating steps 1 and 2 does not result in generator
buildup, and the residual is greater than 6 Vac,
replace the voltage regulator.

OPERATIONAL TEST

1. Connect the test setup as shown in Figure 6. Do not
apply power. Ensure that the light bulbs are rated for
120 V and less than 100 W.

2. Adjust the VAR and/or remote VAR fully CCW.

3. Apply 240 Vac, 60 Hz power to the regulator.

4. Slowly turn the VAR control in the CW direction.

RESULTS:

a. Before the fully CW position is reached, the

light bulb should reach full brightness to
signify the regulator is controlling correctly.

b. At this regulating point, a small change in the

VAR adjustment should result in the light
bulb turning fully on or off.

Publication

9166800995

Revision

E

Date

03/11

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