I. General

SIVACON 8PT which has the standard structure used in construction industry and industry technical field is one of the newest low-voltage switchgear designed by Siemens. It can be applied to every capacity grade with maximum current to 7400A. The installation methods include: Fixed installation, Plug-in installation and withdrawable installation. Meanwhile the 8PT has passed type test, therefore, it can ensure reliable operation and safety of personnel.

II. Overall Features  

Ø The low volt switch cabinet passes the type test (TTA).

Ø Horizontal bus is arranged on the top of the switchgear.

Ø Rated current of 3 electrodes and 4 electrode horizontal bus system can be to 7400A.

Ø Rated peak withstand current (IPK) can be to 375KA.

Ø The size of the chamber is big enough to meet the requirements of every installation.

Ø The chambers can be divided into different units according to modulus structure.

Ø They can be single side installed or back to back installed.

Ø Upper incoming line and the bottom enter-wire way can choose.

Ø Outgoing cable can be connected from front or back side of switchgear.

Ø There is economic efficiency due to flexible solutions.

III. Design Approach Introduction

Ø Fixed-mounted Technology（OFF)

Features: Lower-costs, highly safety. This kind of power distribution cabinet is mainly used in the places where changing is not needed or short-time power-off is allowed during working conditions.

Ø Reactive Power Compensation（PFC）

Features: Lower-costs, highly safety. According to different kinds of Electrical equipment’s structure, Control cabinet can be equipped with a non-choke-type or choke-type capacitor components

Ø 3NJ6 Bar Plug-in Technology（OFPD)

Features: Support easy-plug, highly safety. Compared with withdrawable technology, power distribution cabinet with the plug-in technology used in cable branch circuit is more economical. Its structure is compact and it can realize fast refitting or exchanging during working condition by incoming side plug-in contact. SICACON bar structure is more economical, safe and flexible.

Ø For Freedom of Design of the Control Cabinet（CCS)

Features: have more flexible space. Variety of expansion elements can be chosen for free design and regulating cabinets. There are chambers inside the cabinet.

Ø Plug-in Design（OFPM)

Features: Support easy-plug, highly safety. Equipped with a motor circuit and cable feeder circuits, the plug-in switchgear which is more economy is the replacement of withdrawable switchgear. The unit can realize fast exchanging by incoming side plug without power-off. Plug-in design is more economical, reliable and common. Volume Density is high (each cabinet can have up to 22 circuits).

Ø Withdrawable Design（OFW)

Features: Better applicability, highly safety. Equipped with a motor circuit and cable feeder circuits, withdrawable switchgear has optimal safety and applicability and is easy to operate. Fast exchanging and regulation can be realized through guiding withdrawable mechanism. Each module can proceed such as addition or be exchanging, even compartment can be exchanged during operation. Withdrawable unit is designed according to 8 kinds of modulus height (100,150, 200, 300, 400, 500, 600, 700mm).

IV. Safety and Reliability

SIVACON has passed TTA. Its physical properties during operation conditions and faulty conditions have been tested. It means SIVACON have highly operational reliability and safety Protection on people. SIVACON according to IEC60439-1/DIN EN60439-1(VDE0660）, Were verified as follows:

Type Testing:

Ø Passed temperature rise testing.

Ø Passed  dielectric strength testing.

Ø Passed  short-circuit strength testing.

Ø By inspection or resistance measurement to verify grounding continuity between shell and protection conducting wire.

Ø Passed  the short-circuit strength testing of protective conductor.

Ø  Passed mechanical action testing.

Ø  Passed IP- protection grade testing.

Ex-factory Testing :

Ø Visual check on electrical switch combination device, including the wiring, but also, if necessary, test the electrical operation.

Ø Insulation test.

Ø Check protection measures and visual inspection of the protective conductor connection.

V. Technical Parameters