ESP insulator

Introduction

Being small items, ESP insulator is vital component for normal working of electrostatic precipitator, which operates in high voltage direct current condition. Various ESP insulators are installed at different locations to ensure the system run safely and efficiently.

Types and models

ESP insulators have many types and models.

Conical or cylindrical support insulator. Popular models: T515-1, T515-2, T515-4, 7272, 7256-A, 7257-A, 7262-B, 7278-C, 7410, 7439, 3210, 3309, 3310, 3314, 3352, 3355, etc.
Post insulator. Popular models: T515-3, 7231, 7238, etc.
Rotary shaft insulator. Some people may call it spin axis, insulation ceramic axis. Popular models: 7202, 7203, 7205, 7215, 2007, 2702, 2711, 2721, 2722, 2739, 2743, 2788, YC133, YB10.7, etc.
Wall through bushing insulator. Popular models: CK1-100, 3117, 3118, 3119, H740, 7506, etc.
Rod shaft insulator. Popular model: T501-1, T501-2, T019-2, YJE520, L520, etc.
Pull rod shaft insulator. Popular model: JFL-072-100D.

Material

Electrostatic precipitator working temperature range is 150-450℃. Insulator of aluminium-oxide porcelain or alumina-silicate material is used for different conditions. High grade material gives ESP insulator excellent mechanical strength, electrical resistivity, thermal properties.

Features

High quality ESP insulators should have following advantages.

• High resistivity at elevated temperature to avoid potential electrical breakdown.
• Smooth surface to reduce buildup of contaminants and possibility of tracking.
• High mechanical strength to reduce cracking caused by mechanical stress.
• Low expansion coefficient to resist thermal shock.