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gesis®NRG - the flexible busbarForward-looking, space-saving, and safe

In terms of efficiency, safety, and planning for the future, a structured electrical installation with flat cables already sets the standard. With gesis®nrg, Wieland Electric offers a TOP solution for structured and fast electrical installation. Floor boxes, lighting systems, luminaire connections, sunblind systems, building bus systems, and so on are installed systematically, transparently, and without any errors in next to no time.


The pluggable electrical installation combines in one system

  • Energy and bus system installation
  • Quick and safe setup
  • Sustainability and flexibility for the future

gesis®NRG – quick, easy and flexible

Robust and practical

  • Small number of different components
  • Adapters and feeds compact and robust
  • Mounting holes on all adapters
  • Contact to the flat cable by means of IDC
  • Pluggable outgoing cables with automatic interlock

Simple planning

  • A ready plan in just a few steps
  • Section quantity and length planning
  • Feeds = number of sections
  • End plates = double the number of sections
  • Adapters = quantity of e.g. floor boxes, luminaires, or consolidation points

Resource-efficient

  • Quick planning and installation
  • Reduction in cable material (copper and plastics)
  • Short connection cables for end consumers
  • Energy savings due to three-phase cabling

Decentralized installation

  • Creates simple, future-proof structures
  • Reduces cable quantities (copper, plastics, fire load)
  • Brings sufficient energy into the areas of the building due to the three-phase cabling
  • The three-phase system reduces cable losses
  • Smaller utility rooms increases net floor area

Ideal construction process

Basic configuration:

  • Flat cable is delivered on a reel
  • Lay flat cables and position adapters

Ultimate configuration:

  • Plug in end consumer, e.g. floor box

Changes:

  • Easy to carry out, e.g. position further adapters

Quick installation

  • Lay flat cable like an ordinary cable, position end plates
  • Mount feed and taps at any point
  • Connect feed
  • Position all outgoing cables at the taps

Future-proof

  • Expansions and modifications are quick and easy using further adapters
  • Flat cables for future-proof systems, e.g. KNX, DALI, SMI

Mains + signal, 5-pole, 2.5/4 mm2 Lighting control with DALI

Mains 5-pole + SELV systems 5G2.5 mm² + 2 x 1.5 mm² screened

Mains + signal, 5-pole, 2.5/4 mm2 Sunblind control with SMI

Planning and design

Very simple planning

  1. Roughly estimate the cable lengths and the number of cables.
  2. One feed per harness, with mains and signal separate if applicable.
  3. Make sure there are 2 end plates per mains feed.
  4. Determine outlet type and quantity, e.g. 15 floor boxes = 15 x 3-pole mains adapter with phase selection.
  5. Optional accessories: fastening materials and cable shears.

Tip

  1. Determine cable lengths per harness.
  2. Each cable harness always requires
    • 2 end plates
    • 1 feed
    • n outlets

Check

  1. Estimate the number of harnesses = number of feeds
  2. Number of end plates = 2 x number of harnesses

Adapter

  • Adaptation is achieved using IDC (Isolation Displacement Contacting).
  • The cable cross section is not reduced.
  • The IDC screws must be screwed in all the way with the specified torque.
  • The adapters can be removed and reused elsewhere. The “injured” cable must be taped with the recommended “plaster”.

Cable ends

  • All cuts must have a clean edge, so we recommend the use of Wieland cable shears
  • The 5 and 7-pole 2.5 and 4mm² cables must be cut in stages using the Wieland cable shears for flat cables.
  • Open cable ends must be closed with a cable end cap.

Nominal cross section 2.5 or 4 mm2

We recommend the 2.5 mm² variant as standard.
We recommend the 4 mm2 variant if

  • an increased voltage drop can be expected due to long cable lengths
  • increased neutral conductor loads due to harmonic waves can be expected because of electronic loads.
    • Supplement 3 to DIN VDE 0100-520 names the applicable reduction factors.
    • The maximum reduction factor to be assumed is 0.65.
    • This means that you are always on the safe side with 4 mm² x 0.65 = 2.6 mm

Feed and fuse protection

  • We recommend the feed with round cable. You should not connect the cable directly to a distribution unit.
  • The 5/7-pole 2.5 and 4 mm² cables can be fed with up to 6 mm², while the 10 mm2 cable can be fed with up to 16 mm².
  • The pre-fuses of the 2.5/4 mm² cable must not exceed 20 A.
  • As a rule, the cables may be 1, 3, or 4-pole with fuse protection. The same outer conductor should never be fed to several wires (neutral conductor overload).
  • Pay attention to laying methods and local regulations for fuses. The considerations must be the same as for round cables.

Fastening and laying method

  • All cables can be laid: - on plaster - in cable trays - in cable ducts - in cavity floors and raised floors. In these areas, they can be used like NYM according to VDE 0298 part 3:2006-06.
  • Fastening is recommended every 50 cm.
  • Fastening with flat cable adapters, with Wieland clamps for flat cables or with standard fastening materials such as OBO cable clamps.

Download brochure

gesis® NRG 2016 - Flat cable system

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