Danfoss VLT AQUA Instruction Manual

Also see for vlt aqua: Instructions Design guide Instruction manual Operating instructions Design guide

Contents

Danfoss VLT AQUA Instruction Manual Manual pdf 8 page image

2.1.2 General WarningWarning:Touching the electrical parts may be fatal - even after the equipment has been disconnected from line power.Also make sure that other voltage inputs have been disconnected, (linkage of DC intermediate circuit), as well as the motor connectionfor kinetic backup.Before touching any potentially live parts of the VLT AQUA Drive FC 200, wait at least the minimum time as follows:380-480 V, 150-600 hp [110-450 kW], wait at least 15 minutes.525-690 V, 175-850 hp [132-630 kW], wait at least 20 minutes.A shorter time is allowed only if indicated on the nameplate for the specific unit.Leakage CurrentThe ground leakage current from the VLT AQUA Drive FC 200 exceeds 3.5 mA. According to IEC 61800-5-1, a reinforced protectiveground connection must be ensured by means of: a min. 0.015 in² [10 mm²] Cu or 0.025 in² [16 mm²] Al PE wire or an additional PEwire, with the same cable cross-section as the line power wiring, must be terminated separately.Residual Current DeviceThis product can cause DC current in the protective conductor. If a residual current device (RCD) is used for extra protection, only anRCD of Type B (time delayed) may be used on the supply side of this product. See also RCD Application Note MN.90.GX.02.Protective grounding of the VLT AQUA Drive FC 200 and the use of RCDs must always follow national and local regulations.2.1.3 Before Commencing Repair Work1. Disconnect the adjustable frequency drive from line power.2. Disconnect DC bus terminals 88 and 89.3. Wait at least the time mentioned above in the section General Warning.4. Remove motor cable2.1.4 Special conditionsElectrical ratings:The rating indicated on the nameplate of the adjustable frequency drive is based on a typical 3-phase line power supply within the specified voltage,current and temperature ranges, which are expected to be used in most applications.The adjustable frequency drives also support other special applications, which affect the electrical ratings of the adjustable frequencydrive. Special conditions that affect the electrical ratings might be:• Single phase applications.• High temperature applications which require derating of the electrical ratings• Marine applications with more severe environmental conditions.Consult the relevant clauses in these instructions and in the VLT® AQUA Drive Design Guide for information about the electrical ratings.Installation requirements:The overall electrical safety of the adjustable frequency drive requires special installation considerations regarding:• Fuses and circuit breakers for overcurrent and short-circuit protection• Selection of power cables (line power, motor, brake, load sharing and relay)• Grid configuration (IT,TN, grounded leg, etc.)• Safety of low-voltage ports (PELV conditions).Consult the relevant clauses in these instructions and in the VLT® AQUA Drive Design Guide for information about the installation requirements.2 Safety VLT AQUA High Power Instruction Manual2-2 MG.20.P3.22 - VLT® is a registered Danfoss trademark2