Nidec 800-84132 Series Instruction Manual Download | Manualshive

Page: 10 / 11

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9

THREE PHASE SENSING

Magnetic Amplifier

Regulator Part No.

Sensing Volts AC

Paralleling

800-84132-12

120/139

No

800-84132-23

120/139

No

800-84132-25

120/139

Yes

800-84132-30

120/139

Yes

800-84132-14

208/240

Yes

800-84132-15

208/240

Yes

800-84132-16

208/240

Yes

800-84132-17

208/240

Yes

800-84132-19

208/240

Yes

800-84132-24

208/240

Yes

800-84132-28

208/240

No

800-84132-29

208/240

Yes

800-84132-31

208/240

Yes

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Summary of Contents for 800-84132 Series

Page 1: ...n Operation Maintenance Voltage Regulator Magnetic Amplifier Three Phase P N 800 84132 XX 12 14 19 23 25 28 31 Publication 351 01053 00 April 1995 Kato Engineering Inc P O Box 8447 Mankato MN USA 56002 8447 Tel 507 625 4011 KatoEngineering mail nidec com www KatoEngineering com Fax 507 345 2798 ...

Page 2: ...rror Detector The error detector is a differential amplifier Resistors R11 and R14 in the emitter circuit of transistors Q1 and Q2 are of equal value Therefore when the base voltage of Q1 is equal to the base voltage at transistor Q2 Q1 and Q2 conduction will be equal Transistor Q2 is the reference voltage side of the error detector Its base voltage is kept constant by zener diode Z1 The base volt...

Page 3: ...1 C2 and is referred to as magnetic reset or bias Increasing the control current resets the magnetic amplifier core further below saturation The further the core is reset below saturation the more back e m f will be present across the gate winding Thus the less current will flow through the gate winding and exciter field The magnetic amplifier reacts in an opposite manner when control current is d...

Page 4: ...erator voltage to the required regulator input If excessive voltage is applied to the regulator input terminals L1 and L2 destruction of the rectifiers in the regulator could occur B Fuse F1 The voltage regulator contains a 250 volt 5 amp ABC 5 type fuse located within a fuse holder that is mounted on the voltage regulator chassis Replacement fuse must be a normal break fuse of the same capacity A...

Page 5: ...axi mum clockwise position NOTE Turning R3 clockwise raises the maximum voltage while turning it counterclockwise decreases the maximum voltage 2 Measure generator voltage using the generator outputvoltage If voltage is not the required maximum turnpotentiometer R3 in the appropriate direction until 3 voltmeter indicates output voltage is the required maximum This is the final adjustment of R3 3 T...

Page 6: ...or 9 Verify that the voltage regulation is within or 1 If it is not within these limits refer to troubleshooting procedures 10 Alternately remove and apply load to determine whether the generator voltage is stable and response is satisfactory 11 If the generator voltage becomes unstable or response is slow adjust stability adjust R7 a Instability may occur when the no load field re quirements of t...

Page 7: ... of frayed or broken insulation and all connec tions should be inspected and tightened TROUBLESHOOTING PROCEDURES Troubleshooting is the process of recognizing mal functions of the system intelligently analyzing the malfunction and making the necessary corrections to place the unit back into proper operation The more common generator system malfunctions and the appropriate repair procedures are li...

Page 8: ...2 open or shorted Test rectifiers Magnetic amplifier MA 1 or MA 2 open Check continuity of magnetic amplifier windings Replace amplifiers if windings are open Loose connections to exciter field Terminals F F Check connections Defective exciter or generator See generator manual Low Voltage Open Rectifier in assembly BR1 or BR2 Test Replace if any of its rectifiers are defective Preamplifier PC boar...

Page 9: ...be 120 Vac 400 HZ nominal Voltage Unstable Stability adjust potentiometer R7 not properly set Stability insufficient Adjust R7 as described in chapter 3 Slow Response Excessive load Remove excessive load Stability adjust R7 not properly set Adjust R7 as described in Chapter 3 Poor Regulation Excessive load Remove excessive load Stability adjust R7 not properly set Adjust R7 as described in chapter...

Page 10: ... 139 No 800 84132 23 120 139 No 800 84132 25 120 139 Yes 800 84132 30 120 139 Yes 800 84132 14 208 240 Yes 800 84132 15 208 240 Yes 800 84132 16 208 240 Yes 800 84132 17 208 240 Yes 800 84132 19 208 240 Yes 800 84132 24 208 240 Yes 800 84132 28 208 240 No 800 84132 29 208 240 Yes 800 84132 31 208 240 Yes ...

Page 11: ...ineering Support The brand you trust the power you depend on Include the serial number and model number for your machine in the email subject line Field Service KatoService mail nidec com Manuals KatoManuals mail nidec com Parts KatoParts mail nidec com Remanufacturing KatoRemanufacturing mail nidec com Warranty Quality Assurance KatoWarranty mail nidec com ...

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