M
AVTMTTR320-EN Rev A Oct 2008
18
Figure 4-6 shows the setup for testing the taps on a multiple-tap CT.
Figure 4-6. Setup for Testing Taps on Multiple Tap CT
Bushing Current Transformer (BCT) Mounted on Single-Phase,
Two-Winding Transformer
A turn-ratio test can be performed on a BCT after it has been mounted on a
circuit breaker or power transformer entrance bushing. The test can be
performed without removal of the BCT from the equipment. Proceed as follows:
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.
Using user supplied shorting jumper leads, short-circuit the winding on the
opposite voltage side of the power transformer core.
4.
Connect the heavy-duty clamps marked H1 and H2 of the test leads to the
respective X1 and X2 terminals of the BCT as shown in figure 4-7.
5.
Connect the heavy-duty clamp marked X1 to the power transformer terminal
on which the BCT is mounted and the X2 heavy-duty clamp to the terminal
on the opposite side of the power transformer winding (H2 side of BCT).
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...
