Download Setting Up Tests

Doble TDR 900 Test Set and
T-Doble Software
Set-up and Testing
Safety Considerations
 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.
Instrument Precautions
 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.
Testing in the Field
 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.
Personnel Required
 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.
Safety Testing of the Test Set
 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.
Preliminary Setup
 Preliminary setup involves these steps:
 Selecting a Test Plan Option
 Selecting the Instrument
 Setting System Preferences
Test Plans
Selecting Instrument
 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
Entering Breaker Data
 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
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
Entering Breaker Data
 Basic Limits Tab:
 The Basic Limits tab enables you to enter breaker
timing, motion, resistance, and capacitance limits.
Entering Breaker Data
Channel Setup
 Main Contact Channels Tab:
Channel Setup
 Motion Channels Tab:
Setting Up Tests
 Test Setup Tab:
 The Test Setup tab of the Test Plan page provides
access to the main test parameters.
Setting Up Tests
Setting Up Tests
 Command Parameters:
 The Command Parameters table lists the default Pulse
Duration and Sequencing parameters configured for
each test.
Setting Up Tests
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.