Testing HVI systems
For safety during installation, approval and maintenance tests: Use the test report as a practical
guide for the setting up of lightning protection systems and our services for assessing the function and
condition of HVI Conductors.
The test report –
guide and checklist
The HVI test report enables HVI systems to be tested in accordance with DIN EN 62305-3, taking
the installation instructions into account.
Necessary documents
The following documents must be available for an HVI system:
- General system documentation
- LPS system plan
- Separation distance calculation
- Installation instructions (valid at the time of set-up)
Prescribed test intervals
The required test intervals come from the normative specifications in DIN EN 62305-3 (VDE 0185-305-3), section E.7.1. The protection class determines the test intervals. There are exceptions after a lightning strike or structural changes, which shorten the intervals. An HVI system may only be tested by qualified, trained specialist personnel.
LPS I and II:
Visual inspection:
Once per year
Complete inspection:
Every 2 years
LPS III and IV:
Visual inspection:
Every 2 years
Complete inspection:
Every 4 years
Visual inspection
The visual inspection of the HVI Conductors is carried out from the supply point to the connection to the LPS system or the earthing system. The following criteria, among others, must be checked:
I. Supporting tube
- Supporting tube installation location (outside Ex zone 1/21)
- Supporting tube sealing end range maintained (metal-free volume – cylinder)
- Shrinking of the connection elements
- Connection of the aluminium tube to the nearest point of the system's equipotential bonding
II. Horizontal / vertical cable routing
- Verletzung/Schadstellen des HVI Mantels
- Bending radii
- Minimum clearance of cables routed in parallel (distance > 200 mm)
- Sealing end design for connection to parapets or ring conductors
Complete Inspection
The complete inspection is carried out every 2 years for protection class LPS I and II and every 4 years for LPS III and IV.
The difference between a visual inspection and a complete inspection is that an additional measurement is recommended for the latter: In a meshed HVI system, a loop measurement is used to check whether a low-impedance continuity (recommended value < 1 Ohm) is present.
HVI check
For easily determining the function and condition of HVI Conductors
Both the 1-kV and 15-kV measuring methods can be used to reliably detect both mechanical and electrical damage (e.g. holes or electrical breakdown as a result of overloads) to HVI Conductors.
In addition to the two measuring methods, HVI check includes testable / insulated connection elements, insulating caps, tools and clamps. The test is to be carried out with a commercially available insulation measuring device.
- Freedom of choice and flexibility: A method can be selected depending on the lightning protection system and individual requirements: 1 kV for locating various types of damage/impairment and 15 kV for rapid detection of holes.
- Safety: Electrical and mechanical damage can be found quickly by means of a HVI check.
- Cost saving and familiar handling: The test can be carried out with a commercially available insulation measuring device that you may already own.
- Saving time and effort: Performing the test involves little installation work.
Products
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819646
Insulating connection element
Insulating connection element for sealing the HVI light plus Conductor on the earth side, including heat-shrinkable sleeve. For the dielectric withstand test of the HVI light plus.
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819647
Insulating connection element
An insulating connection element for sealing the HVI light plus Conductor when installed inside the tube, including heat-shrinkable sleeve. For the dielectric withstand test of the HVI light plus.
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819648
Insulating connection element
Insulating connection element for sealing the HVI light plus Conductor when installed outside the tube, including heat-shrinkable sleeve. For the dielectric withstand test of the HVI light plus.
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819649
Measuring point terminal
Measuring point terminal for permanent installation for connecting measuring equipment for the dielectric withstand test of HVI light plus Conductors and HVI Conductors.
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597817
Insulating caps
Insulating caps for the dielectric withstand test on high-voltage-resistant, insulated down conductors. Kit: 5 pieces in a suitable rucksack.
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597125
ISO HEAD 21
Cutting head for mounting the insulated connection elements on high-voltage-resistant, insulated down conductors.
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758022
Discharge Device
Single-pole discharge device with handle and cable lug at the earth cable end for earthing and short-circuiting statically charged installations at the work location.
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HVI Lightning Protection
With the high-voltage-resistant, insulated cables of the HVI system, you can maintain separation distances in an uncomplicated way. The HVI Conductor (High-Voltage Insulation) safely conducts the lightning current from the air-termination system to the earthing system.
Separation distance is key
Maintaining the separation distance prevents dangerous flashovers between earthed parts of the building and the lightning-current-carrying components of the lightning protection system.
Downloads
Any questions?
Send us an email to [email protected] or call us on +49 9181 906 1750.