background image

 

© 2020 Power-Tronics, Inc. 

 
 
 

The Power-Tronics XC15 voltage regulator is a 
self-contained, highly integrated, heavy-duty 
voltage regulator designed for demanding 
applications and extremely flexible installations.  
Continuous output is rated at 32/63VDC @ 
12ADC with forcing output up to 52/105VDC @ 
20ADC! 
 
The modern generator service technician is often 
presented with a variety of generator applications, 
all of which require different voltage regulators, 
features, or buildup considerations.  The XC15 is 
explicitly designed with the service technician in 
mind, packing an impressive collection of features 
in a compact and reliable package with simple 
installation and setup instructions! 
 
Standard integrated features of the XC15 include 
onboard fusing, heavy duty rectifier section, 
integrated 0-10V at 4-20mA control interface, built 
in paralleling provisions, built in automatic battery 
flashing circuitry, and a durable voltage regulator.   
 
Over 30 years of design refinement makes the 
XC15 a durable design, utilizing high-reliability 
components and a simple layout.  Our products 
are designed to provide a lifetime of service and 
is specifically built to minimize failures and 
potential downtime! 
 
The XC15 are capable of parallel operation with 
other generators or with a utility buss.  The 
integrated 0-10VDC or 4-20mA interface allows a 
wide variety of VAR, PF, or other PLC controls to 
remotely control the unit for extreme accuracy 
and unattended installations. 
 
A heavy duty rectifier section, oversized heatsink 
and flexible hookup design makes the XC15 an 
ideal aftermarket replacement AVR for 
applications such as Generac, Shindaiwa, Taiyo, 
Military Conversion generators and many others! 

XC15 

Commercial Series 

Automatic Voltage Regulator 

 (From Serial # 624881) 

Specifications 

 

Input/Sensing Voltage: 

 

 

100 - 277vac 

Frequency: 

 

 

 

50 or 60 Hz 

Voltage Regulation: 

 

 

± .5% From NL to FL 

Parallel Operation 

 

 

Yes 

Continuous Rated Output Voltage:   

32vdc @ 120vac input 

 

 

 

 

 

63vdc @ 240vac input 

Maximum Forcing Output Voltage   

52vdc @ 120vac input 

 

 

 

 

 

105vdc @ 240vac input 

Rated Continuous Output Amps: 

 

12adc 

Minimum Field Resistance: 

 

2.5Ω @ 120vac input 

 

 

 

 

 

5Ω @ 240vac input 

Min Residual Build up Voltage: 

 

3.5vac 

Internal Auto Battery Flash: 

 

12/24vdc 

Under Frequency Protection: 

 

Yes, VPH reduction 

Physical Size: 

 

 

 

7.25 x 4.75 x 3.5 in. 

Weight:   

 

 

 

1.5 lb. 

Internal Protection: 

 

 

Fuses, cartridge type 

Fuse Type: 

 

 

 

Main:  3AG 20A @ 250V 

 

 

 

 

 

Flash:  GDB 5A @ 250V 

External Voltage Adjustment: 

 

Yes 

System Operating Indicator: 

 

Yes 

Integrated 0-10VDC / 4-20mA Interface: 

Yes 

 

Summary of Contents for C15

Page 1: ...uilt to minimize failures and potential downtime The XC15 are capable of parallel operation with other generators or with a utility buss The integrated 0 10VDC or 4 20mA interface allows a wide variety of VAR PF or other PLC controls to remotely control the unit for extreme accuracy and unattended installations A heavy duty rectifier section oversized heatsink and flexible hookup design makes the ...

Page 2: ...put Power Field Connection Diagram 9 277V Input Power Field Connection Diagram Line Neutral 10 Current Transformer Wiring Diagram Paralleled Generators 11 Fully Automatic Remote Adjustment Wiring Diagram 12 Automatic Manual Selectable Remote Adjustment Wiring Diagram 13 Integrated Battery Flash Wiring Diagram 14 Initial Setup and Commissioning 15 Application Troubleshooting 16 Bench Check Procedur...

Page 3: ...e result of over 30 years of engineering efforts and offers high demand features at a competitive price point The XC15 is a time and field proven design based upon the Power Tronics XR8 and SEM250A and is engineered to greatly simplify setup while offering extreme reliability When properly installed the XC15 Voltage regulator is designed to provide a lifetime of service A Generator voltage regulat...

Page 4: ...ained from your generator exciter verify that your generator fits the specifications below Exciter Field Resistance 2 5Ω Exciter Full Load Voltage 32VDC Use 120V Connection See Page 8 Exciter Field Resistance 5Ω Exciter Full Load Voltage 63VDC Use 240V Connection See Page 9 or 277V Connection See Page 10 WARNING BRUSH AND SLIP RING CONNECTION PROBLEMS ARE THE 1 SOURCE OF VOLTAGE CONTROL PROBLEMS A...

Page 5: ...ng to determine your exciter specs please see the section below for instructions on measuring and calculating your exciter specifications Measure your exciter field resistance using a multimeter on your field leads Record this value If you have a brush type generator also take a resistance reading on your slip rings the value you obtain on the slip rings should be no more than 1 difference from th...

Page 6: ...tage L L 208 240V Voltage L N 120 139V NOTE 208V is Standard Voltage Series Delta 240V 3ø Voltage L L 240V Voltage L1 L2 N 120V Voltage L3 N 208V NOTE L3 N is a High Leg 208V instead of 120V Double Delta 120 240V 1ø Voltage L L 240V Voltage L N 120V Preferred Single Phase Connection Don t Use Zig Zag if Possible NOTE Derate generator by 1 3 rated capacity when using this connection ...

Page 7: ... Voltage U W 208 240V Voltage U N 120 139V NOTE 208V is Standard Voltage Series Delta 240V 3ø Voltage U W 240V Voltage U W N 120V Voltage V N 208V NOTE V N is a High Leg 208V instead of 120V Double Delta 120 240V 1ø Voltage U W 240V Voltage U W N 120V Preferred Single Phase Connection Don t Use Zig Zag if Possible NOTE Derate generator by 1 3 rated capacity when using this connection ...

Page 8: ...ing center taps T7 and T0 See Pages 6 and 7 Using a transformer to connect the input of the XC15 to 2 different phases of the generator will result in greater regulation accuracy than when connecting line neutral Diagram Assumes a 208 240V Generator For 480V Generators use a 1KVA or larger Transformer with a 120V Secondary OR Connect to the Generator winding center taps at T7 and T0 NEVER install ...

Page 9: ...the winding center taps T7 and T9 See Pages 6 and 7 Connecting the input of the XC15 to 2 different phases of the generator will result in greater regulation accuracy than when connecting line neutral Diagram Assumes a 208 240V Generator For 480V Generators use a 1 5KVA or larger Transformer with a 240V Secondary OR Connect to the Generator winding center taps at T7 and T9 NEVER install a switch o...

Page 10: ...connection Regulation problems or damage to the unit may result For use on 480V systems connect the regulator from Line to Neutral T7 and T0 See Pages 6 and 7 or use a 480 240V step down transformer rated at 1KVA Diagram Assumes a 480V Generator For other voltages use a 1KVA or larger Transformer with a 240V Secondary NEVER install a switch or breaker on the DC or Exciter side of the voltage regul...

Page 11: ...ve Droop compensation method This allows our products to parallel with existing systems easily while also allowing islanded operation with the flip of a switch When initially installing the droop resistor set it for approximately 7Ω before final adjustment later If the droop is excessive when load testing reduce the resistance a bit at a time until satisfactory droop is achieved CT should be sized...

Page 12: ...am This wiring diagram shows ONLY the control wiring configuration for fully automatic Remote Control of the XC15 Power wiring is shown on Pages 8 10 0 10VDC or 4 20mA Control Signal NOTE Colored Wires are for ease of identification in this drawing only they are not required ...

Page 13: ... ONLY the control wiring configuration for fully automatic Remote Control of the XC15 Power wiring is shown on Pages 8 10 0 10VDC or 4 20mA Control Signal NOTE Colored Wires are for ease of identification in this drawing only they are not required 100KΩ 2w DPDT Switch or Relay Switch Position Automatic é Manual ê ...

Page 14: ...from 3 5VAC at terminals AC1 and AC2 Connecting the battery flash is not required if sufficient residual voltage is present the regulator will build itself up NOTE Connect to 12 or 24 terminal based on 12V or 24V battery voltage NOTE Pushbutton Momentary Toggle Switch Relay Contact Switched B or Oil Pressure Switch Do Not Omit Switch Battery Will Drain with Engine Stopped NOTE 2 nd Circuit of Doub...

Page 15: ...e this issue If connected in 240V connection consider reconnecting to 277V connection 8 Set the internal voltage adjustment to the desired voltage setting for the generator output by turning the adjustment screw clockwise right Note that the voltage adjustment is a 25 turn pot 9 Place the generator on line and observe the frequency and voltage 10 If the generator is being paralleled measure the dr...

Page 16: ... voltage regulator 7 Loose wiring connections 8 Input voltage to regulator is too low 9 Exciter field is grounded 10 Non linear load or wrong selection for regulator hookup 11 Exciter fields are reversed 12 Wrong selection of regulator wiring configuration 13 Defective voltage regulator 14 SCR or Inverter drive effecting generator waveform 15 Regulator needs battery flashing circuit 16 Isolation t...

Page 17: ...F Brightness NOTE It may take several turns of the adjustment screw before the lights illuminate 8 Slowly turn the internal voltage adjustment Counter Clockwise Left until the lights go dark The test light should be OFF NOTE It may take several turns of the adjustment screw before the lights go dark 9 Turn off AC power and disconnect the XC15 from your AC power source After roughly 1 second the te...

Page 18: ...blem Description History Please be detailed Ship To Address City State Zip Country Company Name Contact Person Telephone Number Email Address Primary Load Please Explain Repair Warranty Request Information Generator Leads Check One 12 10 6 4 3ø 4 1ø 3 Generator Wiring Mode Check One High Wye Low Wye Series Delta Zig Zag Double Delta Single Phase Other Terminal Voltage Residual AC Voltage Rated KW ...

Page 19: ...e part A repair request form must be sent in with the product before repairs will begin You can obtain this form by contacting Power Tronics Inc Send repairs to Power Tronics Inc 2802 Cobbler Ln Kerrville Texas USA 78028 Send in repairs only by UPS or FedEx USPS will NOT deliver to our facility Any one of the following conditions will void the warranty v Overheating of the power supply resistor on...

Reviews: