VLT
®
8000 AQUA
Installation
VLT 8000 AQUA protection:
• Electronic motor thermal protection against overload.
• Temperature monitoring of heat-sink ensures that the frequency converter cuts out if the temperature
reaches 90°C (194 °F) for IP00, IP20 and NEMA 1. For IP54, the cut-out temperature is 80°C (176 °F). An
overtemperature can only be reset when the temperature of the heat-sink has fallen below 60°C (140 °F).
For the units mentioned below, the limits are as follows:
- VLT 8152, 380-480 V, cuts out at 75 °C (167 °F) and can be reset if the temperature is below 60
°C (140 °F).
- VLT 8202, 380-480 V, cuts out at 80 °C (176 °F) and can be reset if the temperature has fallen below
60° C (140 °F).
- VLT 8252, 380-480 V, cuts out at 95 °C (203 °F) and can be reset if the temperature has fallen below
65° C (149 °F).
- VLT 8302, 380-480 V, cuts out at 95 °C (203 °F) and can be reset if the temperature has fallen below
65° C (149 °F).
- VLT 8352, 380-480 V, cuts out at 105 °C (221 °F) and can be reset if the temperature has fallen
below 75° C (167 °F).
- VLT 8452-8652, 380-480 V, cuts out at 85 °C (185 °F) and can be reset if the temperature has fallen
below 60° C (140 °F).
- VLT 8052-8152, 525-690 V, cuts out at 75 °C (167 °F) and can be reset if the temperature has fallen
below 60° C (140 °F).
- VLT 8202-8402, 525-690 V, cuts out at 100°C (212 °F) and can be reset if the temperature has fallen
below 70° C (158 °F).
- VLT 8502-8652, 525-690 V, cuts out at 75°C (167 °F) and can be reset if the temperature
has fallen
below 60° C (140 °F).
• The frequency converter is protected against short-circuiting on motor terminals U, V, W.
• The frequency converter is protected against earth fault on motor terminals U, V, W.
• Monitoring of the intermediate circuit voltage ensures that the frequency converter cuts out if the
intermediate circuit voltage gets too high or too low.
• If a motor phase is missing, the frequency converter cuts out.
• If there is a mains fault, the frequency converter is able to carry out a controlled decelleration.
• If a mains phase is missing, the frequency converter will cut out or autoderate when a load is placed on
the motor.
MG.83.A2.02 - VLT is a registered Danfoss trademark
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