Doble TDR 900 Test Set and T-Doble Software Set-up and Testing

 Grounding:  Always first solidly ground or earth the apparatus under test, the TDR instrument, and any other external equipment being used.  Always install the Safety Ground cables when using the system in the field.  When the TDR instrument is permanently housed in a vehicle, ground the vehicle chassis and bind the instrument ground to it. Safety Considerations

 Do not drop or throw the instrument or transducers.  Do not use the instrument or transducers as a step or platform.  Do not store the instrument or transducers in temperatures lower than –13 °F or greater than 158 °F.  Do not operate the instrument or transducers in temperatures lower than 32 °F or greater than 122 °F.  Do not store the instrument or transducers in excessively humid environments.  Do not expose the instrument or transducers to rain, snow, sand, or dust.  Always transport the instrument or transducers with their protective covers in place. Instrument Precautions

 When performing field test:  Perform all tests, except First Trip and Record Only, with the apparatus under test removed from service and made safe for testing.  First Trip testing is done with an energized breaker.  Always adhere to manufacturer’s circuit breaker specifications. Testing in the Field

 The TDR instrument should not be operated by a crew of less than two people.  Designate one person as the Test Set Operator and the other as the Safety Observer.  Test Set Operator—Supervises the test and operates the TDR instrument.  Safety Observer—Observes the performance of the test, oversees the test setup, watches for any potential safety hazards, and gives warnings and guidance as required. Personnel Required

 Use the correct voltage to power the instrument.  Unplug the instrument if it is not to be used for an extended period of time, or before cleaning.  If the instrument is dropped, have it checked by a qualified service technician before placing it back in service. Safety Testing of the Test Set

 Preliminary setup involves these steps:  Selecting a Test Plan Option  Selecting the Instrument  Setting System Preferences Preliminary Setup

Test Plans

 Before connecting the TDR 900 Test Set insure that the test set has been connected to power and turned on for at least two (2) minutes. Then connect either the USB Cable or Ethernet Cable.  Click the Instrument tab.  All available instruments should be displayed.  If no instruments are shown, click Search for Instruments to update the list of available instruments. Selecting Instrument

 Select an instrument from the list and click Verify Connection.  When the connection is verified, a confirmation message appears. Selecting Instrument

 The Breaker page enables you to select and enter all data related to the circuit breaker you wish to test. It contains the following tabs:  Start Here Tab  Nameplate Tab  Basic Limits Tab  Motion Limits Tab Entering Breaker Data

 Start Here Tab:  Click the Find Breaker button and select the type of breaker, manufacturer, and model number from the popup menus.  Select the style of breaker (OCB or EHV).  Select breaks-per-phase and channel information and click Apply. Entering Breaker Data

 Nameplate Tab:  The Nameplate tab enables you to enter more information about the breaker you wish to test.  Library Plan vs Breaker Plan: Entering Breaker Data

 Basic Limits Tab:  The Basic Limits tab enables you to enter breaker timing, motion, resistance, and capacitance limits. Entering Breaker Data

 Main Contact Channels Tab: Channel Setup

 Motion Channels Tab: Channel Setup

 Test Setup Tab:  The Test Setup tab of the Test Plan page provides access to the main test parameters. Setting Up Tests

 Command Parameters:  The Command Parameters table lists the default Pulse Duration and Sequencing parameters configured for each test. Setting Up Tests

 Trip Test:  During the Trip test, a single, user-specified command is issued to open the circuit breaker. Setting Up Tests

 Close Test:  During the Close test, a single, user-specified command is issued to close the circuit breaker. Setting Up Tests

 TripFree (CO) Test:  During the TripFree test, dual, user-specified commands are issued to close the circuit breaker and open it shortly after. Setting Up Tests