Siemens SIVACON S4-ALPHA Bakım Kitabı - Sayfa 33

Endüstriyel Ekipmanlar Siemens SIVACON S4-ALPHA için çevrimiçi göz atın veya pdf Bakım Kitabı indirin. Siemens SIVACON S4-ALPHA 40 sayfaları. Low-voltage switchgear and controlgear assemblies

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Maintenance cycle

SIRIUS Contactors

• Replacing SIRIUS 3RT103 and 3RT107

contactors when the contact reach 100%

of wear (support with contact plate fully

eroded).

Changing contact steps:

– replacing mobile and fixed contacts

– replacing chutes.

Always use original Siemens spare parts.

For correct contactor operation, it is

necessary to follow these instructions:

• Do not clean the contacts with abrasive

paper, files or chemical products; do not

grind the contacts

• Do not grease or lubricate

any contactor part or component. Alcohol

based substances damage mechanical

parts, while oil-based substances may

increase electrical arc switching off time

(resulting in a shorter electrical service

life and the risk of malting due to

overheating)

• Making sure auxiliary voltage not

exceed the established limits

• Making sure the control contacts are

safe and efficient

• Do not drop foreign objects into the

device

• Checking contact functionality and level

of wear after a short circuit

• According to the necessary "plant

availability" level, it is important consider

the proper type of coordination (Type 1

or Type 2 according CEI EN 60947-4-1)

between the contactor and the protection

device.

Terminal strips

• For terminal strips with conductors up

, we recommend checking

to 35 mm

correct tightening according to the torque

values written inside catalogues.

• Checking the labelling readability of the

terminals and eventually restore it.

Accessories

• Checking auxiliary circuits

• Checking conductor tightening

• Checking fuse, relay and contactor

indicator lamp numbering

• When use capacitor for power factor

compensation, checking any overheating.

SIVACON S4 - ALPHA

ENG