Residual Current Operated Protective Device
This product has a leakage (touch) current greater than 3.5 mA. If the protective ground connection is interrupted, a hazardous leakage (touch) current may flow if the housing is touched.
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INSUFFICIENT GROUNDING |
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oUse a protective ground conductor with at least 10 mm2 (AWG 6) or two protective ground conductors with the same or larger cross section of the conductors supplying the power terminals. oVerify compliance with all local and national electrical code requirements as well as all other applicable regulations with respect to grounding of all equipment. |
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Failure to follow these instructions will result in death or serious injury. |
Using Residual Current Protective Devices
Observe the following when using residual current protective devices:
NOTE: If an additional protection measure against indirect or direct (by rated residual current < 30 mA) contact comes into operation, then an upstream residual current circuit-breaker with 30 mA response threshold can be also triggered in normal operation through the device leakage (touch) current of the Lexium 52. Insulation damage or direct contact can cause a circuit connection with a direct current component in the ground conductor. By that the sensitivity of residual current circuit-breakers of the type A or AC is reduced and with that also the ability to protect other accessories in the system.
Therefore, only use the Lexium 52 with a universal current sensitive residual current circuit-breaker of the type B with a triggering threshold over 30 mA (for example, 300 mA, as a protection measure against a fire outbreak caused by insulation degradation).
NOTE: If on the line side of this electronic equipment a residual current protective device is used to protect against direct or indirect contact, then only type B is permitted. Otherwise another protection measure has to be used, like separating the electronic equipment from the environment through double or reinforced insulation or from the line by a transformer. Handle the residual current protective circuit-breakers of the type B for the design and mounting of electronic system carefully. All the residual current circuit breakers that are upstream to a residual current circuit breaker of the type B up to the supply transformer have to be of the type B.
NOTE: According to IEC 61800-5-1 Adjustable speed electrical power drive systems, Part 5-1: Safety requirements - Electrical, thermal and energy - residual current protective devices are required on components with an operational current greater than 3.5 mA for ac or 10 mA for dc.
Additionally, one of the following procedures is required:
1.Use a ground conductor cross section with at least 10 mm2 (AWG 6) copper.
2.Monitor the ground conductor with an equipment that automatically shuts off in case of a detected error.
3.Install the second conductor electric parallel to the protective conductor by using separate terminals. This conductor must meet the requirements of DIN VDE 0100 part 540.
The protective housing provides protection from indirectly touching live parts.
