Pipeline systems and technologies

Additional equipment 

Test Station Test Station

Test Station

Designed to control operation of the insulating monolithic joint and efficiency evaluation of pipeline electrochemical protection. It is supplied with a resistance control unit and reference electrodes.

Spark gap Spark gap

Spark gap

Serves as a safety device, which eliminates any breakdown of an insulator of insulating monolithic joint in case of surge overvoltage inside a pipeline. Explosion-proof.

Technical characteristic Value
Lightning impulse current  (10/350 µs)

100 кА


50  Aс

Specific energy  2500 kJ / Ohm
Nominal pulse breakdown voltage (1,2/50 µs)

1400 V

Nominal power-frequency withstand voltage

285 V

DC withstand voltage  

350 V

Separation resistance at 175V DC

> 100 Mohm

Ambient temperature range  

-60…+80 °C

Protection rating 


SGMM sensor on the spark gap SGMM sensor on the spark gap

SGMM-HGS 100 Ex Spark gap Monitor Module

The spark gap monitor module (SGMM) is intended to assess the operation integrity and calculate the residual life of HGS100 Ex while in operation. 

An underground part is a current sensor with an built-in connecting cable. A current sensor is intended for non-contacting registration of current impulses, which go through the spark gap while its operating.

SGMM controller, installed inside a Test Station SGMM controller, installed inside a Test Station

An aboveground part of SGMM is a controller. It is intended to determine the impulse parameters (amplitude, width, charge, date and time) and to save data in a volatile store. Also the controller shows residual life of a spark gap or SGMM battery.

Parameter name Conditions Value
Maximum permissible amplitude of current impulse, A Impulse 8/20 µs 150000
Impulse 10/350 µs 100000
Range of permissible relative amplitude measurement error, %, not more if IA ≥ 0, 01* Imax,
Timp ≥ 16 µs, where
Timp – duration of the current impulse by level
Range of permissible relative width measurement error, %, not more ±15
Maximum permissible relative charge measurement error, %, not more ±15
Climatic version according to GOST 5150 Aboveground part

Md1, but with operating temperature limits:

Underground part Md5 with operating temperature limits:
Current sensor explosion-proof according to GOST R MEK 60079-18-2012 - 1 Ех mb II T6 Gb X
Protection rating of environmental impact and connecting with current-conductive parts Current sensor case IP68
Controller case IP40
Design life, years Aboveground part 15
Underground part 35
Maintenance intervals, years - 1
Permissible cable length, not less, m - 6