Coating for Busbar by Electrostatic Spray Application

Product details

Product Description

MT-EL-HLF59R is a one part, 100 % solids, epoxy powder coating for insulation of wire and busbars. Designed for electrostatic spray application it has excellent resistance against heat, chemicals and moisture. The coating has a good edge coverage and flexibility. It is serviceable up to 130° C.

Powder Properties

	Typical value	Method
Binder System	Epoxy resin
Density	1.75 – 1.85 g/cm³	ISO 8130-2
Gel time at 200° C	30 – 50 sec.	modified ISO 8130-6
Storage stability	6 months from date of manufacture at ≤ 23° C

Application Data

Preheating temperature	190 – 235° C object temperature
Post cure conditions	5 – 10 min. at above temperature
Particle size distribution	< 32 µm = 25 – 40 % < 160 µm > 99.5 %	Malvern ISO 8130-1

Material Properties

Color	grey, ca. RAL 7047
Recommended film thickness	200 – 300 µm
Flow	smooth
Gloss at 60° angle	40 – 60 units	ISO 2813
Cross cut	Gt 0	DIN EN ISO 2409
Impact resistance	> 5 Joule	DIN 3476-1
Elongation	> 5 %	DIN 3476-1
Hardness	> 100	DIN EN ISO 2815
Pencil hardness	5 H	DIN EN 13523-4
Glass transition temperature	65 ± 7° C (Tg1) 112 ± 5° C (Tg2) 40 – 60 J/g (Delta H)	ISO 11357-2 Inflection point Inflection point
Temperature index	130° C (Class B)	IEC 60216-1
Water absorption (40 h / 23° C)	< 1 %	ASTM D 570
Thermal conductivity	0.4 – 0.5 W/(m·K)	DIN EN 821

Typical Electrical Properties

Specific surface resistivity	> 1013 Ω	IEC 60093
Dielectric strength	45 kV/mm	IEC 60243-1
Dissipation factor tan δ, 25° C Dissipation factor tan δ, 105° C	< 0.01 < 0.01	ASTM D 150 ASTM D 150
Dielectric constant (100 Hz – 1 MHZ)	4.0	ASTM D 149
Comparative tracking index (CTI)	CTI 600 / CTI 175M-1.1	IEC 60112
UL 94 Vertical Burning Test	V-0	IEC 60695-11-10
Hot wire ignition (HWI)	≥ 120 sec.	IEC 60695-2-20
High current arc ignition (HAI)	≥ 150	UL 746A Section 32