Page 8 - Pipelines

Smart d.c. decoupling device VCSD

(Voltage Controlled Smart Decoupling Device)

The smart d.c. decoupling device VCSD 40 IP65 limits The effects of dangerously high overvoltage can be reduced
long-duration, temporary and transient overvoltage. Long- to a safe level in the immediate vicinity of the VCSD.
duration a.c. voltages are limited to a preset value by the The following protection goals can be achieved:
d.c. decoupling device (voltage-controlled smart decoupling • Personal protection in case of temporary and long-
device) without influencing the required d.c. potential. duration overvoltage
• Protection against a.c. corrosion
Such overvoltage of a given duration or voltage level activa- • Protection of devices and components
tes the correct limiting of the VCSD which are assigned to
the relevant overvoltage and discharge it to earth without
negatively affecting the cathodic protection potential on the
pipeline (d.c. potential).

VCSD 40 IP65 Type Part No.
• Voltage-controlled smart VCSD 40 IP65 923 401
decoupling device protects
against transient, temporary
and long-duration overvoltage
• Adjustable response threshold
(3 to 50 V a.c.)
• For flexible use in different
applications and operating
states

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