T1689 Technical Manual Rev 07 CDM Assembly
MV3000 Air Cooled DELTA Introduction
Page 109
5. CDM ASSEMBLY
• Connect this equipment to earth (ground) using the earth terminal provided.
The minimum size of the protective conductor must be in accordance with local safety regulations.
• High Leakage Current
This equipment and the driven motor(s) must be earthed (grounded).
• High Voltages
Replace all shrouds and close all doors before energising the equipment.
• This equipment may be connected to more than one live circuit.
Disconnect all supplies before working on the equipment.
• Wait at least eight minutes after isolating supplies and check that the voltage between DC+ and DC- has
reduced to a safe level before working on this equipment.
• Surfaces on the following items can reach high temperatures and remain hot for some time after power has
been removed:
- Reactors and transformers
- Cables
- Coolant pipes and couplings
• Ensure that access to rotating arts of fans is prevented.
• Air used to cool the product is unfiltered. Air ejected from the product may contain foreign particles. Air
outlets should be arranged to deflect the air away from the eyes.
• Items marked with weights greater than 20kg (44 lb.) should only be moved with lifting apparatus.
• This equipment contains solid state devices which may be affected by electrostatic discharge.
Observe static handling precautions.
• Ensure that all conductors connected to this product are mechanically restrained.
• Where nuts, bolts and washers are supplied fitted to the terminal busbar, remove these fasteners, place the
user’s crimp (or busbar) directly against the terminal busbar of the unit and refit the fasteners. This is to
prevent large currents flowing through steel fasteners and causing overheating.
• When drilling a panel or door to fit components do not allow any swarf from the drilling operation to enter
the enclosure – it may cause component malfunction.
NOTES: Some components of the DELTA range are supplied with shrouds to partially protect against accidental
contact with live parts – from front access only.
DELTA transistor modules are not supplied with shrouds for the live right side or rear surface.
For certain applications, the shrouding supplied with these products may not provide the required
protection. Additional shrouding must be fitted in these instances.
5.1 INTRODUCTION
This section of the manual describes the generic assembly processes for installing DELTA components into the
enclosure. Other application specific tasks (such as mounting circuit breakers or fuses) should be performed
when appropriate, and have not been included in these assembly instructions. Reference should be made to
the specific assembly instructions and drawings produced by the drive designer.
Recommended torque settings are given in Appendix C: Recommended Torque Settings.
Guidance for Electromagnetic Compatibility is in Section 3: Drive (CDM) Design.
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