NH-Fuse Type Disconnector Instructions for Use

Create Date: 2024-8-30 12:03:23|Source: Woehner/Wiehner

When switching on and off components, you should pay attention to the following:

NH-Fuse Type Disconnector Instructions for Use

–In accordance with VDE-0105-100, only operation (non-energized operation, closing, disconnecting, and replacing fuses) is allowed by electrical professionals or persons with electrical knowledge.

– The handle on the fuse cover should be operated quickly.

– Before closing, it is important to note that the fuse cover should be in the precise opening position.

–When the cover is partially opened, the fuse may be electrified, so only the cover handle can be operated.

Wire connection

The depiction of wire mating terminals (clips) applies only to copper wires. The unprotected anti-aging properties of the listed joints have been proven by testing.

Test proof for aluminium wires is only available if specifically mentioned.

Before connecting the aluminium conductors, the oxide layer should be removed from the surface and measures should be taken to avoid oxidation.

After the oxide layer has been removed, no debris or abrasives are present that affect the contact surface. Multi-core conductors should be able to reach the exposed metal conductor part exactly, and an insulating sleeve should be installed. To avoid re-oxidation, the contact points should be sealed (e.g. with acid-free contact grease).

The terminal blocks must be inspected accordingly according to the operating conditions. Under normal environmental conditions and load conditions, it is advisable to check every 6 months. In the case of unfortunate operating conditions, or frequent changes in the temperature of the terminal block, it may be necessary to shorten the inspection period. A temperature measuring strip that can store the maximum value can be installed near the terminal block for objective evaluation when performing a timed view.

Unless otherwise specified, all joints are suitable for connecting a single wire. The dual-function adapter terminal has 2 adapters. In principle, the torque value given in the installation instructions on the equipment or on the company's website shall prevail.

The error of the torque Md of the screw and terminal connection should be within +/- 20% of the rated value if no limit is given. If the size of the terminal cross-sectional area is not given, the size should be limited to two levels below the rated value.

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