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11

8.8. 

If  the  motor  continues  to  hum  or  buzz  after  the 

OUTPUT  VOLTAGE  RANGE  switch  is  turned  off,  the 
solid-state  switch  controlling  the  motor  may  be 
defective.  De-energize  the  input  line  to  the  voltage 
regulator, and replace the control board. 
 

8.9. 

If  the  motor  has  driven  to  one  end  or  does  not 

drive  at  all,  check  to  ensure  the  motor  drive  is 
functioning  correctly.  Refer  to  the  unit's  schematic 
diagram to complete the following steps: 
 
De-energize  the  input  line  to  the  voltage  regulator; 
place  the  OUTPUT  VOLTAGE  RANGE  switch  in  the 
center (off) position, and remove POWER fuses F1 and 
F2 on each control module. 
 
Apply  115  volts  AC  between  terminals  A1-TB1-1  and 
A1-TB1-2  on  the  control  module,  or  to  the 
corresponding  terminals  at  the  motor  board  terminal 
strip  (TB1).  These  nine  junction  terminal  strips  are 
connected  point-for-point.  The  motor  should  turn  the 
variable  transformer  counter  clockwise  (viewed  from 
top)  so  as  to  lower  the  output  voltage  until  it  reaches 
the end of its travel, where the limit switch will prevent 
further rotation in that direction. 
 
Apply  115  volts  between  terminals  A1-TB1-1  and 
A1-TB1-3 should run the motor in the opposite direction 
until a limit switch stops the motor at the end of travel. 
 
If  the  motor  operates  successfully  in  this  test  the 
problem may be with the control board. 

 

8.10. 

Inspect  the  POWERSTAT  Variable  Transformer 

brush(s)  and  commutator(s)  for  signs  of  wear  or 
damage.  The  brush  assemblies  on  the  variable 
transformer  section  will  not  need  replacement  under 
normal  conditions.  When  excessive  brush  wear  or 
commutator  damage  occurs,  it  is  usually  the  result  of 
an 

overload. 

If 

either 

condition 

exists, 

the 

POWERSTAT  Variable  Transformer  section  or  the 
brush  must  be  replaced  or  repaired.  Check  the  load to 
be  sure  the  output  current  rating  of  the  voltage 
regulator is not being exceeded. 
 

Do  not  attempt  to  clean  a  commutator  with  an 
abrasive  such  as  sandpaper  or  a  file. 

This  will  ruin 

the  soft  precious  metal  plating  on  the  commutator 
surface and will shorten the life of the unit. It is normal 
for  commutators  to  become  black  due  to carbon brush 
tracking.  If  a  commutator  is  to  be  cleaned,  use 
denatured alcohol and a soft cloth. 
 

8.11. 

Check  the  variable  transformer  radiator(s)  (the 

die cast part that holds the brush assembly) for signs of 
slippage,  and  see  if  all  brushes  driven  by  the  same 
motor are aligned with each other. The alignment of the 
radiator  and  brushes  depends  on  the  setscrews  that 
hold the variable transformer center tube(s) to the shaft 
and  the  setscrews  that  hold  the  radiator  to  the  center 
tube. Adjust and tighten as needed. 

Содержание STABILINE WHR34 T Series

Страница 1: ...ng WHR64 T WHR94 T WHRS34 T WHRS64 T or WHRS94 T Superior Electric reserves the right to make engineering changes on all its products Such refinements may affect information given in the instructions Therefore USE ONLY THE INSTRUCTIONS THAT ARE PACKED WITH THE PRODUCT WARNING High voltages are present inside this unit during operation Do not operate this unit unless all covers are in place Install...

Страница 2: ...2 ...

Страница 3: ...e Damage and Shortage instructions packed with the unit outlines the procedure to follow if any parts are missing or damaged 2 0 DESCRIPTION 2 1 GENERAL WHR34 T Series STABILINE Automatic Voltage Regulators are three phase 380Y 220 X 480Y 277 volt fast acting electromechanical regulators These WHR Series voltage regulators regulate each line to neutral voltage independently These voltage regulator...

Страница 4: ... S Single Control D Double Control T Triple Control LNN Size Code 3 or 4 digits R Rack Cabinet T Tall Cabinet CB Input Circuit Breaker CS Input Circuit Breaker w 120vac Shunt Trip CR Input Circuit Breaker w 120vac Under voltage Trip Release D Delayed Output M Manual Bypass Switch T Tropicalization Treatment 0 No Meter Options 1 Ammeter s 2 Frequency Meter w Alarm Contacts 3 Both 1 2 above 0 No Ala...

Страница 5: ...s are provided in the base and the rear panel of the unit for wire entry and exit The location of the power connections varies depending on the options provided On units with an input circuit breaker input connections are made directly to the circuit breaker On units without any options the input connections are located on the POWERSTAT variable transformer The input power connections are labeled ...

Страница 6: ...k for a blown fuse 5 2 SETTING OUTPUT VOLTAGE AND SENSITIVITY POTENTIOMETERS Normally the WHR Series voltage regulator should not be operated without the front panel s of the cabinet in place However during the initial operation of the regulator the front panels can be removed to allow setting the OUTPUT VOLTAGE and SENSITIVITY potentiometers 5 2 1 Energize Regulator On units equipped with a manua...

Страница 7: ...nergized when the breaker opens When alarm contact options and a circuit breaker trip option are ordered together the unit is furnished with 120 volt AC auxiliary power module A2 and the alarm circuit contacts are wired to trip the input breaker The Shunt Trip Connections Diagram shows the typical connections 6 2 1 2 Under Voltage Trip L1 In unit where the model number designates the circuit break...

Страница 8: ...trip the breaker when a limit is exceeded 6 2 5 1 Frequency Meter Instructions The frequency meter owner s manual is included with the literature sent with the unit The user can change the meters setting without storing them in memory If the user changed the factory settings and did not select the store option the factory setting can be reinstated by pressing both RECALL buttons at the same time T...

Страница 9: ...connected for all boost the units will bring extra low voltages up to nominal but will not correct high input voltages Since operation in the all boost mode will increase the voltage and heating in the WHR regulator the rated load current and in some cases the maximum rated nominal input voltage must be reduced Refer to the All Buck and All Boost Rating Chart for the all boost ratings For all boos...

Страница 10: ...less the unit is overloaded there is little likelihood of component failure Warning Voltages are present inside this unit which can cause injury Therefore only personnel qualified to service electrical equipment should perform trouble shooting procedures on this unit If the regulator fails to operate correctly the following checks will help locate and correct the problem Refer to the schematic rat...

Страница 11: ...he motor at the end of travel If the motor operates successfully in this test the problem may be with the control board 8 10 Inspect the POWERSTAT Variable Transformer brush s and commutator s for signs of wear or damage The brush assemblies on the variable transformer section will not need replacement under normal conditions When excessive brush wear or commutator damage occurs it is usually the ...

Страница 12: ...AGE 380Y 220 X 480Y 277 FREQUENCY 50 60 Hz X 60 Hz CONNECTION 3 Phase 4 Wire Wye RANGE 20 to 10 of Selected Output OUTPUT VOLTAGE 380Y 220 X 480Y 277 CONNECTION 3 Phase 3 or 4 Wire Model Number base unit Rated Load Max Input Amps Amps kVA at 380 V 480 V WHR34NTR31 15 10 13 20 WHR34NTS31 28 18 23 35 WHR34NTT31 65 43 54 80 WHR34NTT32 130 85 105 160 WHR34NTT33 195 125 160 240 WHR34NTT34 260 170 215 3...

Страница 13: ...tilated enclosures intended for indoor use under usual service conditions Temperature Operating Average ambient temperature for any 24 hour period not to exceed 30 C 86 F and maximum temperature not to exceed 40 C 104 F Average ambient temperature for any 24 hour period may be increased to 40 C 104 F and the maximum temperature may be increased to 50 C 122 F if the load is decreased to 90 of stand...

Страница 14: ...similar control module but some of the parts are specially treated and therefore have a different part number FLOOR MOUNT CONTROL MODULE ASSEMBLY A1 Standard Tropicalized Reference Symbol Part Description Part Number Part Number A1 CONTROL MODULE 213244 004 213244 008 A1 A1 CONTROL BOARD 227412 001 227412 001 SM A1 F1 F2 F3 F4 FUSE 600V 213274 001 A1 LP1 LP2 LIGHT INDICATOR GREEN 227571 001 A1 M1 ...

Страница 15: ...REPLACEMENT BRUSH ASSEMBLY Each POWERSTAT Variable Transformer contains a durable brush assembly These assemblies are designed to reduce the need for attention or replacement however because these are moving parts that rely on contact friction to operate properly an annual inspection is suggested Refer to the maintenance section of this manual for details The replacement brush assembly is listed a...

Страница 16: ...16 11 0 SCHEMATIC For reference only use full size supplied with unit ...

Страница 17: ...17 12 0 FLOOR MOUNT DIMENSIONS Enclosures A through G Note All dimensions are inches millimeters ...

Страница 18: ...18 Enclosures A through G continues Note All dimensions are inches millimeters ...

Страница 19: ...19 Enclosures A through G continues Note All dimensions are inches millimeters ...

Страница 20: ...20 Enclosures DPLUS through GPLUS Note All dimensions are inches millimeters ...

Страница 21: ...21 Enclosures DPLUS through GPLUS continues Note All dimensions are inches millimeters ...

Страница 22: ...22 Enclosures DD through GG Note All dimensions are inches millimeters ...

Страница 23: ...23 Enclosures DD through GG continues Note All dimensions are inches millimeters ...

Страница 24: ...24 Enclosures EEE through GGG Note All dimensions are inches millimeters ...

Страница 25: ...25 Enclosures EEE through GGG continues Note All dimensions are inches millimeters ...

Страница 26: ...which offer literature technical assistance and a select range of models off the shelf for fastest possible delivery and service In addition Superior Electric Manufacturer s Representatives are available to provide prompt attention to customer needs Call or fax for ordering and application information or for the address of the closest Manufacturer s Representative Authorized Distributor or Reselle...

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