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Optional Power-Tronics Add-On Modules 

 

Power-Tronics offers a wide array of optional add-on modules for the XR series voltage 

regulators from static exciter modules to digital interface cards.  For more information on any 

of the modules below, visit our online catalog at: 

 

www.power-tronics.com 

 
 
 
 
 
 
 
 

 

SEM250A 

Static Exciter Module 

Converts the XR8 into a 63VDC 

25ADC Static Exciter! 

SEM250B 

Static Exciter Module 

Converts the XR8 into a 

125VDC 25ADC Static Exciter! 

AFM5X 

Automatic Flash Module 

Adds Automatic Flash or 

Battery Flash to installations 

with low residual or requiring 

guaranteed buildup! 

EIC1020 

External Interface Card 

Allows the XR8 to be controlled 

externally by virtually any digital 

load-sharing controller, VAR 

controller, genset controller, or 

digital governor controller! 

MOP1224HD 

Motorized Potentiometer  

Allows the XR8 to be externally 

controlled by older automated 

controllers using pulsed signals 

or dry contacts for control! 

HVD2 

High Voltage Disconnect 

Adds passive protection for 

your generator and connected 

equipment from runaway and 

high voltage conditions!  

Disconnects power to the 

Содержание Professional Series

Страница 1: ...nal inexpensive digital interface module This capability makes the XR8 suitable for automated or unattended installations or large scale parallel operations Like our previous models the XR8 is fully repairable All major electronic components are not encapsulated to facilitate repair while all sensitive components are encapsulated to protect them from contamination and moisture The XR8 is compatibl...

Страница 2: ...nfiguration for Connection A 9 Hookup Connection B 10 Parallel Configuration for Connection B 11 Hookup Connection C 12 Parallel Configuration for Connection C 13 Initial Setup and Commissioning 14 Optional Power Tronics Add On Modules 15 Conversion From Shunt Wound to Solid State Regulation 16 Internal Fuse Replacement 17 Application Troubleshooting 18 Bench Check Procedures 19 Installation Warra...

Страница 3: ...ator is designed to provide a lifetime of service A Generator voltage regulator has several automated tasks it must perform in order to provide reliable clean and regulated electricity It must build up the generator regulate the terminal voltage within its design specifications and protect both itself and the generator should a fault situation arise The XR8 contains a time proven extremely reliabl...

Страница 4: ...Resistance 26Ω Exciter Full Load Voltage 125VDC Use connection A See Page 8 Exciter Field Resistance 13Ω Exciter Full Load Voltage 63VDC Use connection B See Page 10 Exciter Field Resistance 6 5Ω Exciter Full Load Voltage 32VDC Use connection C See Page 12 Note about Field Resistance When measuring field resistance on a brushless generator simply measure the resistance of the exciter field through...

Страница 5: ...eld voltage use the following formula EExc Where EGen Conf is your Generator s configured voltage e g 120 208 240 480V etc EGen Output is your recorded output voltage and EBattery is your battery voltage 12V usually Next calculate your maximum exciter field amperage using your measured field resistance and your calculated exciter voltage using the following formula Where I is your maximum exciter ...

Страница 6: ... 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 ...

Страница 7: ...th sizing on Page 4 DPE Winding and Auxiliary Winding These generators use an extra winding in the main stator as a power supply for the voltage regulator in an attempt to give the regulator a clean power source that isn t affected by load The XR8 has proprietary filtering circuitry in its sensing stage that is largely unaffected by generator load Because the regulator isn t affected by loading th...

Страница 8: ...ulator to the winding center taps T7 and T9 See Page 6 or use a 480 240V step down transformer rated at 1 5KVA Connecting the input of the XR8 to 2 different legs of the generator as shown in the diagram below will result in greater regulation accuracy than when connecting line neutral NOTE It is not necessary to jumper terminals 7 and 8 if not using the Remote Voltage Adjustment XR8 Professional ...

Страница 9: ... is achieved CT should be sized at 25 35VA burden XR8 Professional Series Universal Voltage Regulator 240VAC MAX Secondary Voltage 100K 2W Unit Parallel Switch Reactive Droop Adjustment 10Ω 100W CT Rating XXX 5A 25 35VA Transformer Rating XXX 240V 1 5KVA Regulator On Off Switch Rate for Primary Voltage 10A Setup Tips Isolation Transformer is recommended for best results but is optional if 208 240V...

Страница 10: ...tems either connect the regulator to the winding center taps T7 and T9 See Page 6 or use a 480 240V step down transformer rated at 1KVA Connecting the input of the XR8 to 2 different legs of the generator as shown in the diagram below will result in greater regulation accuracy than when connecting line neutral NOTE It is not necessary to jumper terminals 7 and 8 if not using the Remote Voltage Adj...

Страница 11: ...op is achieved CT should be sized at 25 35VA burden XR8 Professional Series Universal Voltage Regulator 240VAC MAX Secondary Voltage 100K 2W Unit Parallel Switch Reactive Droop Adjustment 10Ω 100W CT Rating XXX 5A 25 35VA Transformer Rating XXX 240V 1KVA Regulator On Off Switch Rate for Primary Voltage 10A Setup Tips Isolation Transformer is recommended for best results but is optional if 208 240V...

Страница 12: ...enter taps T7 to T0 See Page 6 or use a 480 120V step down transformer rated at 500VA Preferred for superior regulation accuracy Connecting the input of the XR8 to 2 different legs of the generator through a transformer will result in greater regulation accuracy than when connecting line neutral as shown in the diagram below NOTE It is not necessary to jumper terminals 7 and 8 if not using the Rem...

Страница 13: ...y droop is achieved CT should be sized at 25 35VA burden XR8 Professional Series Universal Voltage Regulator 120VAC MAX Secondary Voltage 100K 2W Unit Parallel Switch Reactive Droop Adjustment 10Ω 100W CT Rating XXX 5A 25 35VA Transformer Rating XXX 120V 500VA Regulator On Off Switch Rate for Primary Voltage 10A Setup Tips Isolation Transformer is recommended for best results even if 120 139V is p...

Страница 14: ... The voltage adjustment is a 25 turn pot NOTE The maximum internal voltage setpoint is 260VAC This helps prevent accidental over voltage conditions due to incorrect installation 8 Place the generator on line and observe the frequency and voltage 9 If the generator is being paralleled measure the droop during loading and adjust the droop resistor as necessary Reducing droop resistor resistance will...

Страница 15: ... Exciter AFM5X Automatic Flash Module Adds Automatic Flash or Battery Flash to installations with low residual or requiring guaranteed buildup EIC1020 External Interface Card Allows the XR8 to be controlled externally by virtually any digital load sharing controller VAR controller genset controller or digital governor controller MOP1224HD Motorized Potentiometer Allows the XR8 to be externally con...

Страница 16: ...lder Shunt Wound exciters that originally had manual mechanical or series solid state voltage regulators by converting the wiring as in the diagrams below If the generator will not build up after conversion try switching your F and F leads at the regulator and try starting up again NOTE Armature brushes MUST BE ISOLATED from the field leads for proper operation ...

Страница 17: ...10 HXP Fuse Replacement Procedure Refer to the image above for easy reference Remove the 4 screws located on the front of the aluminum mounting can to allow removal of the can Remove the aluminum mounting can from the circuit card Use a continuity tester or multimeter to test the fuses A good fuse will read continuity or 0Ω resistance Replace open fuses then replace and re tighten all screws Fuse ...

Страница 18: ...tive connection in exciter field 5 Open diode in exciter or shorted rotor in generator 6 Loose component in voltage regulator 7 Loose wiring connections 8 Input voltage to regulator is too low 9 Exciter field is grounded 10 Non linear Inverter load or wrong selection for regulator hookup 11 Exciter fields are reversed 12 Wrong selection of regulator wiring configuration 13 Defective voltage regula...

Страница 19: ...t 6 SLOWLY turn the internal voltage adjustment CW until the incandescent light bulb turns fully on then adjust the internal voltage adjustment CCW until the light bulb is off 7 Observation You should be able to taper the incandescent light bulb on and off in a relatively smooth manner If the light flashes on or off quickly the regulator has an internal fault do not continue this test 8 Remove the...

Страница 20: ...tion 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 Rated KVA Ge...

Страница 21: ...art 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 s on ...

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