• Robert Dansertlaan 250, 1702 Groot-Bijgaarden, Belgium

Micaver bushings

Micaver insulators, made of a mineral that does not burn, have a high mechanical resistance in tension and compression. They can be used up to a temperature of 350° – 400°C.
This composite material makes it possible to mechanically hold two parts together while isolating them electrically. These functions are maintained under various environmental conditions (vibrations, rain, etc.), thermal shocks and high operating temperature.
Micaver® insulators are classified A1 and therefore do not burn (EN45545-2).
In order to prevent most rust problems in saline and aggressive environments, Micaver® insulators can be made with 304L stainless steel inserts that meet all the requirements of standard NF F 61-016.

Micaver

UnitsTransfer moulding
Physical and mechaincal / Physiques et mécaniques
Specific gravity / Masse spécifique103.kg.m–34.3
Bending strength / Contrainte de rupture en flexionMPa80
Tensile strength / Contrainte de rupture en tractionMPa20
Compressive strength / Contrainte de rupture en compressionMPa260
Hardness / DuretéBrinell80
Thermal / Thermiques
Maximum operating temperature / Température maximale d’utilisation°C350
Softening point / Température de ramollissement°C420
Expansion coefficient / Coefficient de dilatation10–6.K–111
Thermal conductivity (250 °C) / Conductibilité thermique (250 °C)W.m–1.K–10.7
Electrical / Electriques
Dielectric strength / Rigidité diélectriquekV.mm–111
Resistivity / Résistivitélog (10) Ωm13.2
Surface resistivity / Résistivité superficiellelog (10) Ω14.5
Dielectric constant (1 kHz) / Constante diélectrique (1 kHz)11
Dissipation factor (1 kHz) / Tangente angle de perte 1 kHz0.017 - 0.04
Arc resistance / Tenue à l’arcs320
Physicochemical / Physico-chimiques
Porosity – absorption of water after immersion for 48 hours
Porosité – Absorption d’eau après 48 heures d’immersionmg.cm–2none / néant

MV604

MV 604 - type

ART.Inserts type
Male=M
Female=F
MP
mm
Pas/pitchWeight
(kg)
MV 604 A2 F10131500.77
MV 604 B2 F12121750.46
MV 604 C2 F10101500.46
MV 604 D2 F8151250.46

MV604 specification

Mechanical characteristics / Caract. Mécaniques / Mechanische kenmerken
Torsion / Résist. Torsion / WringingsweerstanddaN
MV 604 A≥ 4.5
MV 604 B≥ 6
MV 604 C≥ 4.5
MV 604 D≥ 2
Flexural Strength / Resist. flexion / buigweerst.DaN
MV 604 A≥ 8
MV 604 B≥ 8
MV 604 C≥ 8
MV 604 D≥ 8
Electrical characteristics / Caract. électriques / Electrische kenmerken
Maximum operating intensity / ntensité maximale / Max. intenisteitA
MV 604 A≤ 1000
MV 604 B≤ 1000
MV 604 C≤ 1000
MV 604 D≤ 1000
Max Operating Voltage / Tension d’emploi / GebruikspanningkV
MV 604 A≤ 3
MV 604 B≤ 1
MV 604 C≤ 1
MV 604 D≤ 1
Test Conditions / Conditions d’essais / Testomstandigheden
Voltage / Tension / Spanning10 kV
Frequency / Fréquence / Frequentie50 Hz
Duration / Durée / Duur1 min.

MV467

MV 467 - type

ART.Inserts type
Male=M
Female=F
MI
(mm)
Pas/pitchWeight
(kg)
MV 467 A1 rod/tige515800.12
MV 467 B1 rod/tige8201250.22
MV 467 N1 rod/tige12351750.36

MV467 specification

Mechanical characteristics / Caract. Mécaniques / Mechanische kenmerken
Tensile Strength / Résist. Traction / TrekweerstanddaN
MV 467 A≥ 600
MV 467 B≥ 1800
MV 467 N≥ 3500
Torsion / Résist. Torsion / WringingsweerstandDam.N
MV 467 A≥ 0.5
MV 467 B≥ 2
MV 467 N≥ 6
Electrical characteristics / Caract. électriques / Electrische kenmerken
Arc-over Voltage (dry) / Tension de contournement / Omtrek (droog)kV
MV 467 A≥ 11
MV 467 B≥ 13
MV 467 N≥ 13
Breakdown Voltage / Tension de perforation / PerforatiekV
MV 467 A≥ 15
MV 467 B≥ 18
MV 467 N≥ 20
Maximum operating intensity / ntensité maximale / Max. intenisteitA
MV 467 A≤ 100
MV 467 B≤ 300
MV 467 N≤ 600
Test Conditions / Conditions d’essais / Testomstandigheden-
Voltage / Tension / Spanning10 kV
Frequency / Fréquence / Frequentie50 Hz
Duration / Durée / Duur1 min.