BMK-J-Y(St)Y
BMK-J-Y(St)Y is a DIN VDE type names (Germany) cable designation: BMK = Brandmeldekabel (fire alarm cable): the trade's mark for J-Y(St)Y with a fire-red sheath (similar to RAL 3000) printed "Brandmeldekabel"; a name, not a letter code; J = Installation cable (VDE 0815); -Y = PVC core insulation; (St) = Static screen: plastic-laminated aluminium foil over the core bundle, with a copper drain wire under it; Y = PVC outer sheath, fire red; BMK-J-Y(St)Y = BMK J-Y(St)Y: fire alarm cable (Brandmeldekabel), the VDE 0815 installation cable J-Y(St)Y with a red sheath printed "Brandmeldekabel". 300 V maximum operating voltage, not for power and not to be connected to the mains; test voltage 800 V core to core and core to screen; -30 to +70 °C fixed (Lapp DB1708001DE). DIN VDE 0815:1985-09 (construction J-Y(St)Y...Lg, Table 4 p. 12; electrical Table 10 p. 17: loop 73.2 ohm/km for 0.8 mm, test 800 V, 300 V peak; read, the values Lapp quotes); flame retardant to IEC 60332-1-2.
1 coding system recognises this code
DIN VDE type names (Germany)
| Symbol | Meaning |
|---|---|
BMK | Brandmeldekabel (fire alarm cable): the trade's mark for J-Y(St)Y with a fire-red sheath (similar to RAL 3000) printed "Brandmeldekabel"; a name, not a letter code |
J | Installation cable (VDE 0815) |
-Y | PVC core insulation |
(St) | Static screen: plastic-laminated aluminium foil over the core bundle, with a copper drain wire under it |
Y | PVC outer sheath, fire red |
BMK-J-Y(St)Y | BMK J-Y(St)Y: fire alarm cable (Brandmeldekabel), the VDE 0815 installation cable J-Y(St)Y with a red sheath printed "Brandmeldekabel". 300 V maximum operating voltage, not for power and not to be connected to the mains; test voltage 800 V core to core and core to screen; -30 to +70 °C fixed (Lapp DB1708001DE). DIN VDE 0815:1985-09 (construction J-Y(St)Y...Lg, Table 4 p. 12; electrical Table 10 p. 17: loop 73.2 ohm/km for 0.8 mm, test 800 V, 300 V peak; read, the values Lapp quotes); flame retardant to IEC 60332-1-2 |
What is BMK-J-Y(St)Y cable?
BMK-J-Y(St)Y: BMK J-Y(St)Y: fire alarm cable (Brandmeldekabel), the VDE 0815 installation cable J-Y(St)Y with a red sheath printed "Brandmeldekabel". Rating: 300 V maximum operating voltage, not for power and not to be connected to the mains; test voltage 800 V core to core and core to screen; -30 to +70 °C fixed (Lapp DB1708001DE). Standard: DIN VDE 0815:1985-09 (construction J-Y(St)Y...Lg, Table 4 p. 12; electrical Table 10 p. 17: loop 73.2 ohm/km for 0.8 mm, test 800 V, 300 V peak; read, the values Lapp quotes); flame retardant to IEC 60332-1-2.
Lapp DB1708001DE ("J-Y(ST)Y...LG Brandmeldekabel", valid from 01.09.2021, manufacturer): construction to DIN VDE 0815 Table 4, type J-Y(ST)Y...LG; sheath fire red (similar to RAL 3000); max. operating voltage 300 V, "not for power transmission", must not be connected to the mains; test voltage 800 V core/core and core/screen; loop resistance max. 73.2 ohm/km; fixed -30 to +70 °C; flame retardant to EN 60332-1-2 / IEC 60332-1-2; CPR class to EN 13501-6 and EN 50575. Lapp product information PN 0456 (manufacturer): solid bare copper conductor 0.8 mm (0.50 mm²), PVC insulation, cores twisted in pairs and the pairs stranded together (the 2-pair 2x2x0,8 as a star quad), a foil wrapping over the core, a static screen of aluminium-laminated plastic foil with a copper drain wire, PVC sheath, printed "Brandmeldekabel" at intervals; outer diameter 2x2x0.8 7 mm, 4x2x0.8 9 mm. TKD Kabel shop (secondary): "J-Y(ST)Y LG BMK 2X2X0,8 - ROT RAL3000", core colours to DIN VDE 0815, 300 V, test 800 V; the grey RAL 7032 telecom version and the red BMK version are the same cable. Meusel Kabeltechnik (secondary): "J-Y(St)Y Lg BMK" to VDE 0815, 300 V, 2x2x0,8 about 6.1 mm, 4x2x0,8 about 8.7 mm. Shops print the mark before ("BMK-J-Y(ST)Y 2x2x0,8", elektro-wandelt.de, 2,684 sales) or after the code ("J-Y(ST)Y 2X2X0,8 Lg BMK"). Core colours: red / black and white / yellow are the VDE 0815 star quad (typical: the decoder's VDE 0815 letter reading draws the same; Lapp refers to its annex T10, which was not read). DIN 14675 (fire alarm systems) and VDE 0800-1 were not found printed on any sheet read, so they are not cited.
Documents and pages the readings were taken from
DIN VDE type names (Germany): how to read the cable type names
Fire behaviour (EU CPR)
PVC sheath (Y).
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.
BMK-J-Y(St)Y as the cable designer builds it, BMK-J-Y(St)Y
Overall diameter 6.3 mm, about 60 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 | 0.40 | 1.6 |
| Separation tape | Polyester | 0.05 | 4.0 |
| Tape screen | Aluminium | 0.15 | 4.3 |
| Sheath | PVC | 1.0 | 6.3 |
BMK-J-Y(St)Y on a drum
The smallest drum that passes every check, for 6.3 mm and about 60 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 | 12 of 21 | 33–34 kg |
| 1,000 m | KTG 5 (500 mm flange), plastic KTG drums (Europe), Bayka, KTG | 20 of 21 | 63–64 kg |
Barrel at least 20 × OD = 125 mm for a cable of this kind (Telecom, data and control cable): 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: BMK-J-Y(St)Y
BMK-J-Y(St)Y belongs to the family Control and instrument cables: the lowest laying temperature, bending radius, pulling, depth, drum handling and the test after laying, every rule with its sources. Laying and handling guide: Control and instrument cables
Terms on this page: oversheath (outer sheath)
Selling this cable? Open it in the designer and get a datasheet with your logo (Pro). Open the cable designer · See Pro
Work with BMK-J-Y(St)Y
Who makes or stocks this cable?
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