![background image](http://html1.mh-extra.com/html/danfoss/turbocor-tt-series/turbocor-tt-series_service-manual_4104524101.webp)
3. If the cables cannot be securely fastened to the input terminal, the Terminal Block is damaged and
needs to be replaced.
4.11.1.3 Verifying the 3-Phase AC Input
1. Turn ON the AC input power.
2. Set the multimeter for AC voltage measurements.
3. Place the meter probe on one phase of the AC input terminals and the other meter probe on another
phase of the AC input terminals as shown in Figure 4-79 Measuring the 3-Phase AC Input Voltage on
the AC Input Terminals - TTS300/TGS230 and Figure 4-80 Measuring 3-Phase AC Input Voltage on AC
Input Terminals (TTS/TGS/TTH/TGH (Except TTS300/TGS230). Repeat for all AC input terminals. Repeat
on load side of the fuses (TT300/TG230 only).
Figure 4-79 Measuring the 3-Phase AC Input Voltage on the AC Input Terminals - TTS300/TGS230
Figure 4-80 Measuring 3-Phase AC Input Voltage on AC Input Terminals (TTS/TGS/TTH/TGH (Except TTS300/TGS230)
4. Verify that the meter shows the expected AC measurement within the range as indicated in Table 4-18
Expected AC Voltage Range on page 102. The acceptable AC input voltage range is +/-10% of the
nameplate AC input voltage.
5. If the meter does not show any reading, it is possible there is no power from the AC source. Ensure the
AC power source is turned ON and try again. If there is no power on the load side of the fuses, isolate
the power and check the fuses.
6. If the measured values correspond to the specified values for all phases, the AC input voltage is okay.
M-SV-001-EN Rev. H-1/23/2023 Page 101 of 294
Содержание Turbocor TT Series
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