Solid State Polarization Cell

Caltech Engineering Services- India introduces Pa-El's Solid state Solid State Polarization Cell that is a semiconductor cell, used for short-term current peaks and over voltage drainage. Solid State Polarization Cell that we provide is also used for synchronization of cathodic protection system with lightning strike protection demands for gas reduction station, measuring reduction station, blockade station etc.

There are two types of solid-state Solid State Polarization Cell: PP�1 for 35A/40kA current and PP�2 for 100A/40kA current.

PPC1

• Case Box : 165x255x80mm
• Mass : 2.27Kg

PPC2

• Case Box : 200x250x183mm
• Mass : 6.33Kg

Technical Data
PP�1

• long-term current (AC/DC) : 35A
• lightning surge current : 40kA(8/20S)
• short-term fault current(AC) : 90A/0,5s
• voltage blocking level (DC) : -3/+1V,-2/+2 V or according to customer
• working temperature : -40⁰C to + 60⁰C

PP�2

• long-term current(AC/DC) : 100A
• lightning surge current : 40kA(8/20S)
• short-term fault current(AC) : 700A/0,5s
• voltage blocking level (DC) : -3/+1V,-2/+2 V or according to customer
• working temperature : -40⁰C to + 60⁰C

It is possible to install current and voltage measuring sensor switch characteristics as follows :
PP�1

• current sensors(shunt) : 60mV/40A
• voltage sensor : -10V,+10V

PP�2

• current sensors(shunt) : 60mV/100A
• voltage sensor : -10V,+10V

Voltage and current signals are available on DB9 standard connector

Adjustmentand Repairs
Validity check is performed once a year. Validity check is performed by :

• visual inspection
• blocking voltage check in both direction
• measuring point cable check
• grounding resistance measurement
• AC/DC potential on pipeline and grounding measurement
• AC/DC current measurement

PP� is a one-time product and adjustment is not possible. Breakdown voltage is mostly occurred as short-circuit, rarely as a total disconnection between positive and negative pole. If break down detected it is necessary to replace cell with new one.