Baker D30R User Manual - page 15

Instrument Overview 

12/3/2009 | 71-022 V6 

D30R 

15 

NOTICE 

For the surge test, with the SECONDS/DIV control at the lowest possible setting, the 

ringing pattern must be at lease one division in length for one full cycle.  Less than one 

division for the first cycle indicates a very low inductive load.  DAMAGE to the 

instrument is possible when operated more than ten (10) seconds into a low inductive 

load. 

This control adjusts the seconds per division or sweep rate of the trace on the horizontal axis 

of the surge display. There are ten settings corresponding to 2, 6, 10, 20, 60, 100, 200, 500 

micro-seconds and 1 and 2 milli-seconds per division. The seconds per division setting is 

displayed on the lower right portion of the display for the reference during Surge Testing. 

This control will have the effect of zooming in or out on the wave pattern. 

15)

Kelvin Resistance test connector 

16)

Output control 

This control adjusts the output voltage of the tester.  Clockwise (CW) rotation increases output 

and counterclockwise (CCW) rotation decreased output.  Full CCW is the MIN (minimum) point 

output and full CW is MAX (maximum) or 100% of the testers rated output. 

Note:

  A “Zero Start Interlock” is connected to the output control for use during Surge and 

HiPot testing. The user must return the output control to MIN each time before pressing the 

Test button (6).  In other words, if the Test button is pressed while the Output control is 

above zero the instruments output is disabled until the Output control is rotated to MIN.  

17)

Line in 

The external AC power supply plug. 

18)

On/OFF 

On/Off switch 

19)

Leads energized indicator light (2 lights) 

These indicator lights will illuminate when voltage is applied during a test. 

20)

Surge/HiPot selector  

This function, like Function selector (12), is a relay that selects the type of test, Surge or 

HiPot, to be performed.  The name of the test chosen is displayed on the lower portion of the 

CRT for reference. 

Note

:  For testing windings and stators, it should always agaree with the position of the 

Function selector. 

21)

Three phase selector switch 

This is an optional high-voltage rotary switch that selects which test lead is hot, open, or 

ground.  If this switch is present on the tester, refer to Appendix D: Three Phase Operation for 

a description and instructions to use this switch for surge testing. 

22)

Test leads (lower right side) 

Test leads, one red and three black or ground leads, are provided for contact to the windings.  

Test leads are insulated to 60kV. 

23)

Footswitch connector (rear panel) 

A footswitch may be connected to this socket which is in parallel to the Test button.  The 

footswitch will operate the tester in a manner identical to the Test button, freeing the user’s 

hands from having to operate the switch.