Connecting to the Transformer
AVTMTTR320-EN Rev A Oct 2008
19
Check to make sure that the BCT is mounted with proper polarity with
respect to power transformer entrance bushing and that connection polarities
are correct.
Figure 4-7. Setup for Testing BCT Mounted on Single-Phase Two-Winding Transformer
BCTs Mounted on Three-Phase Transformers
A turn-ratio test can be performed on all three BCTs using a single setup. Figure
4-8 shows how (to make the proper connections) when the BCTs are mounted
on a typical delta winding and Figure 4-9 shows how when mounted on a typical
wye winding.
1.
With the ON/OFF Switch in the OFF position, make the circuit
connections as described in Section 3.2.
2.
Connect the H and X test cables to the respective H and X receptacles of the
TTR320. Make sure that the connectors are securely fastened (using
clockwise rotation) to the receptacles.
3.
Short-circuit all windings on the opposite voltage side of the power
transformer core using jumper leads.
4.
Check to make sure that all BCTs are mounted with proper polarity with
respect to the power transformer entrance bushing. Ensure that all
Summary of Contents for TTR320 Series
Page 2: ......
Page 3: ...Three Phase TTR Transformer Turn Ratio Test Set TTR320 series...
Page 8: ...AVTMTTR320 EN Rev A Oct 2008 iv M...
Page 38: ...M AVTMTTR320 EN Rev A Oct 2008 30 M...
Page 44: ...M AVTMTTR320 EN Rev A Oct 2008 36 M...
Page 50: ...M AVTMTTR320 EN Rev A Oct 2008 42 M...
Page 66: ...M AVTMTTR300 Rev A Oct 2008 58...
