Basler Electric APR63-5 User Manual

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Model

APR 63-5

9168700107

INTRODUCTION

By supplying and controlling the dc exciter field power, the APR 63-5 regulates the output voltage of a conventional, 50 or 60 hertz, brushless generator that has a 63 Vdc field. APR 63-5 voltage regulators are CSA/UL recognized and housed in a rugged, epoxypotted, plastic case.

The APR 63-5 senses the generator output voltage, converts it to a dc signal, and compares this signal to a reference voltage. An error signal is developed and used to control the dc field power in order to maintain a constant generator output.

SPECIFICATIONS Power Input

Range: 190 to 277 Vac, ±10%,

1-phase Frequency: 50/60 Hz Burden: 650 VA

Sensing Input

Configuration: 1-phase, tap-selectable Frequency: 50/60 Hz Range 240 V Tap: 190 to 250 Vac, ±10% 480 V Tap: 380 to 480 Vac, ±10% Burden: 5 VA maximum

Power Output

Ratings

Maximum Continuous: 5.0 Adc, 63 Vdc, 315 W One Minute Forcing: 8.5 Adc, 105 Vdc, 893 W

DC Field Resistance

Minimum: 12.6 Ω Maximum: 100 Ω

Voltage Adjustment

Internal Control

Range 240 V Tap: 170 to 264 Vac 480 V Tap: 340 to 528 Vac

External Control

Provided by an optional, 1,000 Ω, 2 W potentiometer (Basler P/N 17727).

Voltage Buildup

Buildup is automatic from generator residual voltage as low as 6 Vac.

Publication

9168700991

Revision

Instructions

Part Number

Frequency Compensation

See Figure 1.

Overexcitation Shutdown

Output power is removed instantaneously if the field voltage exceeds 135 Vdc, ±5 Vdc. Output power is removed after a time delay that is inversely propor tional to the voltage magnitude when the field voltage exceeds 100 Vdc, ±5 Vdc.

Agency Certifications

UL recognized and CSA certified.

Temperature

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

OVEREXCITATION SHUTDOWN PROTECT IO N

If the exciter field voltage exceeds 100 Vdc (±5 Vdc), the APR 63-5 automatically removes field power after a time delay. This delay is inversely proportional to the magnitude of the overvoltage. Figure 2 illustrates the inverse time characteristic. At 135 Vdc (±5 Vdc), field power is removed instantaneously.

When field power is removed due to overexcitation, the APR 63-5 will not reset or return to operation until the generator output decreases to less than 6 Vac for a minimum of 10 seconds.

REGULATOR CONTROLS

APR 63-5 controls are illustrated in Figure 3 and consist of FREQ, STAB, and VOLT.

FREQ

This control prevents generator and regulator damage when the generator frequency decreases by decreasing the generator output voltage. To adjust the FREQ control:

1. Set the generator rpm at the desired

frequency roll-off.

2. Adjust the FREQ control until the voltage

begins to decrease.

3. Increase the generator speed to nominal. The

output voltage should be at nominal.

STAB

This control enables adjustment of the generator response time (and thus voltage stability). Use an oscilloscope or other voltage recording device to set

Date

04/14

2014

For terms of service relating to this product and software, see the Commercial Terms of Products and Services document available at www.basler.com/terms.

this control. Observe the following guidelines when

Caution

adjusting the STAB control.

blowing fuses. If desired, install a shutdown switch.

• Counterclockwise rotation of the STAB control

reduces the voltage response time. If rotated too far, the generator voltage will hunt (oscillate).

• Rotate the STAB control clockwise, just past

the point where voltage oscillation occurs.

VOLT

Observe the following guidelines when adjusting the VOLT control.

• Clockwise rotation of the VOLT control

increases the generator output voltage.

• Replacing the jumper across terminals 6 and

7 with an external potentiometer (1,000 Ω, 2 W) gives a ±10% voltage adjustment range with the nominal value set by the VOLT control.

ACCESSORY EQUI P ME NT

The following equipment is available as options to the APR 63-5:

• BE18674001 power isolation transformer

• APM 2000 and CT for parallel compensation

• MVC 300 for manual voltage control

• CBS 305 Current Boost System

5. Connect the line-to-line generator sensing to

the regulator. Generator sensing connects to terminals 4 and either 240 or 480, depending upon the generator voltage.

OPERATION

The following procedures are provided for APR 63-5 setup and commissioning.

Meggers and high-potential test equipment must not be used. Incorrect use of such equipment could damage the semiconductors contained in the regulator.

Preliminary Setu p

To prevent damage to the regulator, perform the following steps before proceeding with system startup.

1. Verify that the APR 63-5’s specifications re

compatible with the generator system requirements.

2. Ensure that the regulator is connected

correctly. See Figures, 4, 5, and 6.

MOUNTING

The APR 63-5 can be mounted in any convenient position and may be mounted directly on the generator set. Figure 3 illustrates the mounting dimensions. Use #11 (ANSI) or M5 (metric) mounting hardware.

INTERCONNECTION

Connect the APR 63-5 by performing the following steps. Figure 4, Figure 5, and Figure 6 illustrate typical APR63-5 connections. The torque applied to the terminal block screws should not exceed 9 inch pounds (1 Newton meter).

1. Configure the regulator’s nominal frequency

by connecting the jumper from COM to either the 50 Hz or 60 Hz terminal.

2. If using a CBS 305 with the APR 63/5, remove

the jumper from APR 63-5 terminals CB– and CB+ and connect those terminals to the CBS

305.

3. Connect APR 63-5 terminals F+ and F– to the

exciter field. Observe proper polarity.

4. For regulator power, connect terminals 3 and

4 to the generator stator. Fuse both leads with 5 A, 250 V, high interrupting capacity, fast-

3. Install fuses per step 4 of Interconnection.

During periods of prime mover idling, use the excitation shutdown switch.

SYSTEM STARTUP

1. Start the prime mover and br ing it up to rated

speed. The generator voltage should build up. If a minimum residual generator voltage of 6 Vac is not present, perform the procedure under Field Flashing.

2. Slowly adjust the regulator VOLT control until

the voltage reaches the nominal value. If used, adjust the remote voltage adjust potentiometer to set the generator output to the desired value.

3. Apply and remove load to check for stability. If

the voltage is unstable, refer to the guidelines under Regulator Controls, STAB.

4. Reduce the generator frequency (speed) to 55

Hz (on 60 Hz systems) or 45 Hz (on 50 Hz systems). Verify that the generator output decreases from this point. If it does not, refer to the steps under Regulator Controls, FREQ.

Publication

9168700991

Revision

Instructions

Date

04/14

Page

2 of 6

+ 4 hidden pages