Electrical Laminated Wood

It is made of fine birch/beech wood by rotary cutting into thin woodveneers, which are then glued, laminated and hot-pressed.

Its dielectric constant is close to that of transformer oil, and it has good insulation properties, so it can be used in transformer oil forlong-term applications.

Standard

GBTT 20634.3-2008

IEC61061-1:1998

DIN7707

Heat Resistance

Class A

Technical Data Sheet

Product name	XUJUE	LII/2-E3B/R	MII/2-E3B/R	LX/2-E3B/R	MX/2-E3B/R
	GB/T20634	C2B	C4B	T2B	T4B
	IEC61061	C2R	C4R	T2R	T4R
	DIN7707	KP20222	KP20224	KP20242	KP20244
	Unit
SECTION I PHYSICAL CHARACTERISTICS
Appearance	–	The surface…
Density	g/cm3	0.9-1.1	1.2-1.3	0.9-1.1	1.2-1.3
Oil absorption	%	25	≥5	25	7.5
Continuous working temperature	°C	105	105	105	105
Temperature limit for drying process	°C	140	140	140	140
Contamination of dielectric liquids	Δtgδ	<0.1	<0.1	<0.1	<0.1
MECHANICAL CHARACTERISTICS
Flexural strength	MPa	110	130	130	200
Modulus of elasticity in flexure	GPa	9	11	11	15
ELECTRICAL CHARACTERISTICS
Electric strength	kV/3mm	45	45	40	45
Breakdown voltage	kV/25mm	>80	>80	>80	>80
Surface resistivity	Ω	1012	1012	1012	1012
Volume resistance	Ω*cm	1012	1012	1012	1012
Dissipation factor	tgδ	0.01	0.01	0.01	0.01
Relative permittivity	εr	3.7	3.8	3.7	4.1

Note: All information,recommendations and suggestions appearing herein concerning this product are average values ascertained at room temperature by regular statistical analysis, it is provided purely for information and shall not be regarded as binding unless expressly agreed otherwise.

Characteristics

Great oil absorption property: It has rapid drying properties and maintains effective oil impregnation in air-free conditions. These characteristics contribute to reduced energy consumption while ensuring a high dielectric constant and eliminating partial discharge phenomena.

Low moisture content: The reduced moisture content decreases drying time during the steam stage, resulting insignificant energy savings and cost reduction. This moisture reduction minimizes the risk of corrosion in the transformer’s metallic working components.

Good electrical insulation properties: We have our own laboratories for performing mechanical and electrical testing.

100% metal detected: We ensure 100% test for all of our densified wood produced, thus avoiding potential danger caused by metal contaminants.

Applications

It is used to make insulation and support components in transformers, such as coil pressure plates, iron core backing plates, lead brackets, etc.

Product storage 

Store in a dry and clean room at room temperature, place it horizontally, pay attention to moisture-proof and fire-proof, and the storage period is 12 months.