72A-1898 Rev. A 11/01 1-1
Monday, November 26, 2001 1:09 pm
1. Getting Started
Getting Started provides the minimum information required to make
connections between a circuit breaker and the Doble
®
TDR9000
Circuit Breaker Test System, configure the TDR9000, run a test and save
the Test Results for Dead Tank and Live Tank tests. When necessary,
page references to detailed explanations are provided.
Information in this chapter is split into Site Preparation and Running the
Test, and can be accessed by an individual task, or an entire circuit
breaker test can be performed by executing both sets of tasks.
Site Preparation
Site Preparation consists of the following steps:
1. Circuit Breaker Preparation
2. TDR9000
™
Connections
3. Circuit Breaker Connections
4. Laptop and TDR9000 Test Plan Configuration
Step 1: Circuit Breaker Preparation
N
OTE
Safety issues are different for First Trip/Close tests. Refer to ”Safety
Considerations: First Trip/Close Tests” on page 4-2 for a specific
discussion.
Circuit Breaker
Preparation:
Offline Testing
Figure 1.1 on page 1-4 shows how the Circuit Breaker Control Cabinet
looks once preparation is complete.
Preparation of the circuit breaker includes the following sub-steps:
1. Opening the circuit breaker
2. Opening, locking and tagging the circuit breaker isolating disconnect
switches
3. Connecting safety grounds to a cleaned (brushed) spot on the ground
grid and then to each bushing of the circuit breaker to be tested
4. Removing DC power from the Trip and Close circuits on the circuit
breaker control panel
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