273ESA-21

Elastimold shielded surge arresters provide lightning and switching surge protection for transformers, cables, equipment, and other components in underground power distribution systems. They are a cost-efficient solution for all underground medium voltage applications.

The 273ESA-21 is a 200 amp shielded surge arrester. It uses IEEE 386 interfaces for connection with other 200 amp components.

For a 10 kA current wave, the maximum discharge voltage for the 273ESA-21 (17.0 MCOV) is 65.52 kV crest. For a 1.5 kA current wave, it is 56.42 kV crest.

The 273ESA-21, with an MCOV of 17.0 kV RMS, has a duty cycle rating of 21 kV RMS.

Arrester size is selected based on the Maximum Continuous Operating Voltage (MCOV) line-to-ground applied across it. The system's line-to-ground voltage must not exceed the arrester's MCOV.

Elastimold shielded surge arresters are available in elbow (ESA), parking (PSA), and bushing (BSA) styles. These styles allow for direct connection to equipment.

The 273ESA-21 is rated for a 25 kV voltage class with a Maximum Continuous Operating Voltage (MCOV) of 17.0 kV RMS.

Elastimold shielded surge arresters comply with IEEE C62.11-2012 for metal-oxide surge arresters and IEEE 386 for separable insulated connector systems.

A #4 AWG flexible copper ground lead is tethered to the jacket. This ground lead is designed to withstand 10,000 amps for 10 cycles without fusing.

Yes, the molded EPDM rubber arrester housing is fully shielded and fully submersible, making it suitable for a variety of applications.

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