Siemens 6SE7086-4AH85-1BA0 operating instructions Description

1 Description

WARNING

The water-cooled rectifier or rectifier/regenerating unit is a component of an installation. It must be correctly installed by the builder of the installation in accordance with the applicable standards.

In the event of non-compliance, death, serious bodily injury or substantial damage to property can result.

Correct functioning of the cooling system is ensured by connecting the unit to an external cooling-water circuit. The design of the cooling-water circuit with regard to

−whether it is an open or closed system

−the selection and combination of materials

−the composition or quality of the cooling water

−the dissipation of heat from the cooling water (heat exchange, fresh supply ...)

is an important factor for the functional reliability and safety as well as the useful life of the whole installation. A maximum of three components can be connected in parallel (1 basic unit + 2 parallel units).

Moisture condensation is not permissible as in the case of air-cooled units.

From product status A2 and onwards, rectifier units can be ordered without semiconductor fuses - option L32 (In the case of product status 1, option L32 means that semiconductor fuses are built in). External cable- protection devices, however, do not provide protection for the thyristors.

The rectifier/regenerative units are generally supplied with semiconductor fuses. It is not permissible to operate them without semiconductor fuses.

The electronic p.c.b's must be supplied with power from an external 24 power supply system (1 A for basic unit, 0.3 A for every other unit connected in parallel).

For the changes in the MRPD setting (setting of the type) as well as other information and warnings, see the operating instructions for the air-cooled rectifier or rectifier/regenerative units.