STAHL 8562/5 Residual Current Circuit-Breaker Instruction Manual

STAHL 8562/5 Residual Current Circuit-Breaker

General Information

Manufacturer

R. STAHL Schaltgeräte GmbH
Am Bahnhof 30
D-74638 Waldenburg

• Phone: +49 7942 943-0
• Fax: +49 7942 943-4333
• Internet: www.stahl-ex.com

Operating Instructions Information

• ID NO.: 149912 / 8562605300
• Publication Code: 2014-06-04·BA00·III·en·07
• We reserve the right to make technical changes without notice.

Symbols

Warning!
This symbol indicates advice which, if ignored, puts your health or the ability of the device or components to function at risk.
Note
This symbol indicates important additional informations, tips and recommendations.

Safety Instructions

The most important safety instructions are summarized in this section. They supplement the corresponding regulations which the staff responsible must study.
When working in areas, subject to explosion hazards, the safety of personnel and plant depends on complying with all relevant safety regulations. Assembly and maintenance staff working on installations therefore have a particular responsibility. They require precise knowledge of the applicable standards and regulations.

As a user, please observe:

• national safety and accident prevention regulations,
• national assembly and installation regulations (e.g. IEC/EN 60079-14),
• generally recognised technical regulations,
• safety instructions and information in these operating instructions,
• characteristic values and rated operating conditions on the rating and data plates,
• instruction plates on the unit,
• that any damage can invalidate the Ex-protection.

Use the miniatur circuit-breakers in accordance with their designated use and for their intended purpose only (see “Function of Residual Current Circuit- Breaker type 8562/5“ on page 3). Incorrect or impermissible use or non- compliance with these instructions invalidates our warranty provision. No modifications or alterations to the devices impairing their explosion protection are permitted. The miniatur circuit-breakers must only be fitted and operated if they are undamaged, dry and clean.

Conformity with standards and regulations

See certificates and EC Declaration of Conformity: www.stahl- ex.com

Function of Residual Current Circuit-Breaker Type 8562/5

The series 8562 residual current circuit-breaker protects personnel in hazardous areas. With its very short switch-off time, it switches off electrical equipment when the tripping current is exceeded. It is designed for fitting into an enclosure with type of protection increased safety „e“.

 Technical Data

• Please contact the manufacturer if operating conditions are non-standard.
• Further technical data is given in the STAHL catalogue or is available upon request.
• The temperature class depends upon where the protective enclosure is installed.
• Change the Residual Current Circuit-Breaker at the end of its service-life to guarantee ongoing protection!

Arrangement and Assembly

These circuit-breakers are explosion-protected devices to IEC/EN 60079-0. They must be fitted into an enclosure with type of protection increased safety “e“, e.g. enclosure type 8146/5 from R. STAHL Schaltgeräte GmbH.

Mounting orientation

Dimensional Drawings

 Installation

Mains Connection

• Connect the cables with particular care.
• Choose suitable cables and route them accordingly to ensure that the maximum permissible conductor temperatures are not exceeded.
• To ensure that creepage distances are maintained remove precisely 10, 17 or 21 mm of insulation (see chapter “Rated connection cross-section“).
• The conductor must not be damaged (scored) when stripping the insulation!
• Only heat-resistant cables must be used, if connected directly.

8.2 Rated connection cross-section

Solid, stranded or finely stranded copper wires can be used. 1 or 2 wires of the same cross-section can be fitted under one terminal. Both wires must be made of the same material. No preparation is necessary prior to connecting the wires.
When terminal sleeves are fitted, they must be gas-tight and applied with a suitable tool.

Notice: Auxiliary contacts can be led out through the main contact terminals.

• observe the cross-sections
• note the terminal marking

Note
As part of the installation procedure, the tight fit of the clamping connection must be checked according to IEC/EN 60079-14, -17.
If necessary, the clamping connections must be retightened to the relevant torques.

Connection diagrams

Connect the device according to the rating plate. It has to be taken care that the neutral conductor is connected correctly.

Commissioning

Before commissioning, ensure that:

• the device has been installed in accordance with the standards,
• the connections have been correctly made,
• the device is not damaged,
• all screws and nuts are fully tightened.

Servicing

Maintenance

Maintenance and repair work on the devices may only be carried out by appropriately authorized and trained personnel.
Before any work commences, the devices must be disconnected from the supply.

Observe the relevant national regulations in the country of use!

The following items must be checked as part of the maintenance schedule:

• Check that no cable connections are loose.
• Check the plastic enclosure for cracks or other visible signs of damage.
• Check that the permitted temperatures, in accordance with IEC/EN 60079-0, are adhered to.
• Check the reset function of the switch lever.
• Check that the device functions correctly.
• For function testing in the on-state, press the test key “T“. The FI switch/circuit breaker must be triggered immediately

Test key
The functional test should be carried out regularly during maintenance at least once every six months, unless other regional or user-specific additional tests have been prescribed.

Maintenance Intervals
Check explosion-protected components regularly to ensure that its fitting, installation and operation are in accordance with the regulations.
Refer to the corresponding national regulations (e.g. IEC/EN 60079-14) for the type and scope of tests. The maintenance intervals must be chosen, such that the occurrence of deficiences, anticipated in the system, can be avoided.
Note the following when establishing the intervals between checks:

• the operating conditions (degree of utilization of the Miniatur Circuit-Breaker, maloperation)
• manufacturers’ instructions in technical documentation (mechanical and electrical service life)
• major changes in the whole system (e.g. changes of zone allocation)

Remedial Action
Any defects, which affect the explosion protection, must be remedied immediately:

• Take the device out of operation! (Disconnect it from the supply!)
• Replace the device!

Transport and Storage

Transport and Storage are only permitted in the original packing.

Disposal

Observe the national standards for refuse disposal.

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