Checking electrical connection

  1. Perform the following checks: D = detailed check, N = close inspection, S = visual inspection

Test schedule

D

N

S

I

Screws, cable glands (direct and indirect), blanking plugs are of the correct type, complete and sealed.

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II

Cable and line type appropriate for the purpose.

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III

No visible damage on cables and lines.

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IV

Cable screw connections in accordance with standard EN 60079-1 (Ex “d”) must be used.

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V

The ignition transmission prevention passages must be free of dirt and damage and greased (AGIP GR NS 4 or equivalent).

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VI

Electrical connections secure.

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VII

Unused connection terminals tightened.

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VIII

Insulation resistance (IR) of motor windings satisfactory.

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IX

Earth connections, including any additional equipotential bonding connections, are proper (e.g. connections are solid, conductor cross-sections are sufficient).

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X

Error loop impedance (TN system) or earth resistance (IT system) satisfactory.

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XI

Automatic electrical protective equipment set correctly (automatic resets not possible).

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XII

Special operating conditions are observed (PTC thermistor triggering system in accordance with Directive 2014/34/EC).

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XIII

All cables and lines that are not being used are connected properly.

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XIV

Installation with changeable voltage in agreement with the documentation.

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XV

Electrical insulation clean/dry.

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  1. Fit terminal box cover for explosion protection. Make sure that there are no dirt particles in the terminal box and on the ignition transmission prevention passages and that the connection surfaces are undamaged and greased as specified (Installation instructions). Observe the tightening torques according to the table (Electrically connecting the unit).