The SINAMICS S150 Converter Cabinet Units are characterized by their compact, modular and service-friendly design.

Design example of a SINAMICS S150 Converter Cabinet Unit

Basic design of a SINAMICS S150 Converter Cabinet Unit with a number of version-specific options

Varnished PCBs

The following drive units are equipped as standard with varnished PCBs:

• Chassis format units
• Control Units
• Sensor Modules
• Terminal Modules
• Advanced Operator Panel (AOP30)

The varnish coating on the modules protects the sensitive SMD components against corrosive gases, chemically active dust and moisture.

Nickel-plated busbars

All of the copper busbars used in the converter cabinets are nickel-plated in order to achieve the best possible immunity to environmental effects. Further, the bare copper connections do not have to be cleaned for customer connections.

Note: For technical reasons, some parts of the copper busbars are not nickel-plated for some of the options.

Degrees of protection

The EN 60529 standard covers the protection of electrical equipment by means of housings, covers or equivalent, and includes:

• Protection of persons against accidental contact with live or moving parts within the housing and protection of the equipment against the ingress of solid foreign matter (touch protection and protection against ingress of solid foreign bodies)
• Protection of the equipment against the ingress of water (water protection)
• Abbreviations for the internationally agreed degrees of protection

The degrees of protection are specified by abbreviations comprising the code letters IP and two digits.