TECHNICAL INFORMATION

TECHNICAL INFORMATION

Insulators are insulating and supporting components of the power transmission lines and busbars (distribution centers, switch Insulators are insulating and supporting components of the power transmission lines and busbars (distribution centers, switchgears) where they are fixed. gears) where they are fixed.
Insulators are intended to be used for 2 reason: Insulators are intended to be used for 2 reason: -Separating conductors from the earth in regards to electricity -Separating conductors from the earth in regards to electricity -Supporting the weight of conductors and additional loads -Supporting the weight of conductors and additional loads
Esitas Insulators are epoxy cast resin insulated with internal metal fittings. Esitas Insulators are epoxy cast resin insulated with internal metal fittings.
The insulators are particularly suitable to be used as single support or voltage control. The insulators are particularly suitable to be used as single support or voltage control.
Esitas MV Insulators are designed for indoor-indoor and outdoor-indoor applications Esitas MV Insulators are designed for indoor-indoor and outdoor-indoor applications (from 3,6kV to 36kV): (from 3,6kV to 36kV): • Bushing Insulators Bushing Insulators • Post Insulators Post Insulators • Capacitive Insulators(voltage divider) Capacitive Insulators(voltage divider)
Post insulators for indoor installation
General characteristics

Epoxy resin post insulators, for indoor application, with internal metal fitting. Epoxy resin post insulators, for indoor application, with internal metal fitting. These insulators are particularly suitable to be used as single supports for conductors, for fuses and for other equipment (as These insulators are particularly suitable to be used as single supports for conductors, for fuses and for other equipment (as switchgears). switchgears).
Application

For indoor installation with working condition at T For indoor installation with working condition at T° max. 85 max. 85 °C. C.
Service voltage

Up to 36 kV (40,5 kV available on request) Up to 36 kV (40,5 kV available on request)
Routine Tests

Visual inspection Visual inspection Testing of conductive connection of fixing inserts for post insulators Testing of conductive connection of fixing inserts for post insulators Dry power-frequency withstand voltage Dry power-frequency withstand voltage Partial discharge extinction voltage test Partial discharge extinction voltage test

Standards

IEC 60273 (CEI 36 IEC 60273 (CEI 36/12) - CENELEC HD 578 S1 12) - CENELEC HD 578 S1 IEC 60660

Capacitive voltage divider post insulators
General characteristics

Epoxy resin post insulators with capacitive divider for the reading of the voltage. Epoxy resin post insulators with capacitive divider for the reading of the voltage. Manufactured with internal metal fitting, they can be equipped with couplings and low voltage light signal box. Manufactured with internal metal fitting, they can be equipped with couplings and low voltage light signal box. These insulators are mainly suitable to be used as insulated supports of equipment, bus bar or fuses. These insulators are mainly suitable to be used as insulated supports of equipment, bus bar or fuses.
Application

Max working temperature of 85 Max working temperature of 85 °C. C.
Routine Tests

Visual inspection Visual inspection Testing of conductive connection of fixing inserts for post insulators Testing of conductive connection of fixing inserts for post insulators Dry power-frequency withstand voltage Dry power-frequency withstand voltage Partial discharge extinction voltage test (connected to the voltage indicator) Partial discharge extinction voltage test (connected to the voltage indicator)
Service voltage

Up to 36 kV (40,5 available on request) Up to 36 kV (40,5 available on request)

Standards

IEC 60660 IEC 60660
Bushing Insulators for indoor-indoor / outdoor-indoor outdoor-indoor
General characteristics

12 - 36 kV epoxy resin bushing insulators. The insulators can be fitted with copper bars 12 - 36 kV epoxy resin bushing insulators. The insulators can be fitted with copper bars designed from 250 up to 1250 A. designed from 250 up to 1250 A. They are equipped with internal metal fittings for installation on the relevant frame and with They are equipped with internal metal fittings for installation on the relevant frame and with brass nuts and washers for fastening of phase connectors. brass nuts and washers for fastening of phase connectors.
Application

Indoor Indoor/outdoor installation at max working temperature of 85 outdoor installation at max working temperature of 85 ºC.
Service voltage

Up to 36 kV. Up to 36 kV.
Routine Tests

Visual inspection

Dry power-frequency withstand voltage

Measurement of partial discharge quantity
Standards

IEC 60137