VTMB
VTMB is a NBN type names (Belgium) cable designation: V = PVC insulation; T = Transportable (Moving Installation, For Mobile Appliances); M = Medium Load / Insulation (500 V; 450/750 V In The 2011 Catalogue); B = Belgium Type; VTMB = VTMB: Belgian name of the flexible PVC cord H05VV-F, 300/500 V: fine-stranded copper cores in PVC insulation under a PVC sheath. 300/500 V. HD 21.5 / NBN C 32-123 (H05VV-F, now EN 50525-2-11).
2 coding systems recognise this code
NBN type names (Belgium)
| Symbol | Meaning |
|---|---|
V | PVC insulation |
T | Transportable (Moving Installation, For Mobile Appliances) |
M | Medium Load / Insulation (500 V; 450/750 V In The 2011 Catalogue) |
B | Belgium Type |
VTMB | VTMB: Belgian name of the flexible PVC cord H05VV-F, 300/500 V: fine-stranded copper cores in PVC insulation under a PVC sheath. 300/500 V. HD 21.5 / NBN C 32-123 (H05VV-F, now EN 50525-2-11) |
NBN (Belgian national cable names, ...B types)
| Symbol | Meaning |
|---|---|
V | Polyvinyl Chloride (PVC) |
T | Transportable (Moving Installation, For Mobile Appliances) |
M | Medium Load / Insulation (500 V; 450/750 V In The 2011 Catalogue) |
B | Belgium Type |
How to read a NBN (Belgian national cable names, ...B types) cable code
What is VTMB cable?
VTMB: Belgian name of the flexible PVC cord H05VV-F, 300/500 V: fine-stranded copper cores in PVC insulation under a PVC sheath. Rating: 300/500 V. Standard: HD 21.5 / NBN C 32-123 (H05VV-F, now EN 50525-2-11).
Rexel Belgium sheet "VTLB VTLBp VTLmB VTMB" (c. 2007): VTMB (300/500 V) = H05VV-F to HD 21.5 / NBN C 32-123. NBN installation key (Cebeo Tome 04 2011 p. 24): T cord for extension and connection, M medium insulation (printed there as 450/750 V; the cord itself is 300/500 V).
Documents and pages the readings were taken from
Fire behaviour (EU CPR)
PVC sheath (VTMB).
Typically targeted, as declared by makers for this kind of construction in the examples this site checked (not the class of this cable):
EcaN1XV-R, Ahlsell (seller)Cca-s3,d1,a3FG16OR16, Nexans (La Triveneta Cavi)EcaU1000 R2V, Nexans (La Triveneta Cavi)EcaN2XSY, Waskönig+Walter (10 kV datasheet)
Listed as sources, alphabetically by maker. No maker pays to appear here.
A CPR class is declared by the maker in its Declaration of Performance and printed on the sheath (EN 50575 cl 7). This decoder does not assign one. What the CPR classes mean →
Sources: EN 13501-6 draft and FprEN 50575:2014 final draft (drafts, not the published texts); IEC 60332-3-24:2000+A1:2008; EN 13501-3 draft A2.
VTMB: equivalents in other countries
Shown for 3x1.5 300/500 V. Each country's rules are applied to this build, keeping the conductor, section, cores, voltage, screen, armour and sheath.
| Country | Standard | Name in that country | Verdict | Differences |
|---|---|---|---|---|
| Europe | EN 50525-2-51 | H05VV5-F 3G1,5 300/500 V | Equivalent | every value the same |
| Europe | EN 50525-2-12 | H05VVH8-F 3G1,5 300/500 V | Equivalent | every value the same |
| Germany | DIN VDE 0250-405 | NYSLYÖ-J 3x1,5 300/500 V | Close | Insulation 0.7 → 0.6 mm; Sheath 0.9 → 0.8 mm; Overall diameter 8.15 → 7.52 mm |
| India | IS 694 | FR FLEXIBLE 3x1,5 1100 V | Close | rated higher: 1100 V (this cable 300/500 V); Insulation 0.7 → 0.6 mm; Overall diameter 8.15 → 7.72 mm |
| China | GB/T 9330 | KVVR 3x1.5 450/750 V | Close | rated higher: 450/750 V (this cable 300/500 V); Sheath 0.9 → 1.2 mm; Overall diameter 8.15 → 8.75 mm |
Nominal values computed by each standard's rules, not manufacturer data. This is not a statement that two cables are interchangeable: the buyer's specification and the maker's type test decide.
VTMB as the cable designer builds it, 3x1.5 300/500 V
Overall diameter 8.1 mm, about 110 kg/km. Nominal values from the standard's tables for this size, computed, not a maker's data.
| Layer | Material | Thickness, mm | Over the layer, mm |
|---|---|---|---|
| Insulation | PVC | 0.70 | 2.9 |
| Filler | PVC | 6.3 | |
| Sheath | PVC | 0.90 | 8.1 |
VTMB on a drum
The smallest drum that passes every check, for 8.1 mm and about 110 kg/km as the cable designer builds it. Drums as their makers print them; lengths are estimates: whole layers wound nested (each turn in the groove of the layer below), wound diameter 1.05 × OD, 50 mm freeboard under the flange rim. Cable makers' own tables print less, as they count aligned layers.
| Length | Drum size (its makers) | Layers | Gross weight |
|---|---|---|---|
| 500 m | KTG 5 (500 mm flange), plastic KTG drums (Europe), Bayka, KTG | 14 of 16 | 58–59 kg |
| 1,000 m | KTG 7 (710 mm flange), wood KTG drums (Europe), Bayka, KTG | 15 of 17 | 135–138 kg |
Barrel at least 12 × OD = 98 mm for a cable of this kind (Flexible cable (class 5 or 6 conductor)): KTG table, the cable's datasheet wins. A load rating is the drum maker's own.
Other lengths, drums and weights: the cable drum calculator
Load it on a truck: 1000 m on its drum in the loading planner
Laying, sizes and datasheet: VTMB
VTMB belongs to the family Flexible cords: the lowest laying temperature, bending radius, pulling, depth, drum handling and the test after laying, every rule with its sources. Laying and handling guide: Flexible cords
Selling this cable? Open it in the designer and get a datasheet with your logo (Pro). Open the cable designer · See Pro
Work with VTMB
Who makes or stocks this cable?
Makers and stockists of this cable family appear here as sponsors for your region, each marked "Sponsored"; a listing never changes what this page says about the cable.