SINAMICS G120P Cabinet drive inverter cabinet units are characterized by their modular and service-friendly design.

A wide range of options is available depending on the cabinet version, which permits optimum adaptation of the drive system to the respective requirements (see section Options).

Example of design of a SINAMICS G120P Cabinet drive inverter cabinet unit, version A with a CU230P-2 Control Unit

Basic design of a SINAMICS G120P Cabinet drive inverter cabinet unit with several significant options

Coated modules

The following inverter components are equipped as standard with coated modules:

• Power Modules
• Control Units
• Intelligent Operator Panel IOP

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

Nickel-plated busbars

All of the busbars used in the inverter cabinet 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 some options, for technical reasons, parts of the copper busbars cannot be nickel-plated.

EMC shielding busbars and PE busbars

The Cabinet Modules are delivered with a EMC shielding busbar and a PE busbar as standard. The EMC shielding busbar is used to connect shielded power cables for line and motor supply cables. The PE busbar is used to connect and secure PE cables.

Crane transport aids

The inverter cabinet units are supplied with a crane transport aid mounted on the top. In the case of single cabinets up to a width of 1200 mm (47.2 in), transport eyebolts are provided to transport the unit by crane. Transport rails are used with cabinet widths >1200 mm (47.2 in) or for several cabinets (e.g. option L01). Rope spreaders should be used for low crane hook heights.

Degrees of protection of cabinet units

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.