Marine Grounding System


Marine Grounding System
Monitored potential equalization during loading and unloading of sea oil tankers and vessels. Very low-ohmic measure line especially for maritime application.
Marine Grounding System
  • Effective potential equalization between ship and shore prevents possible formation of sparks and hot spots
  • Highest safety by interruption of the battery effect (galvanic cell) between ship and shore
  • Automatic shut off of product flow, when grounding is interrupted
  • Explosion protection for worldwide use according to IECEx and the European ATEX directive 2014/34/EU (zone 1) – IECEx approval not yet finalized –
  • As absolutely essential safety component even when insulating flanges are used

  • Various control outputs, e.g. for connection to an additional status indicator to display an unsafe status
  • Marine Grounding Clamp with 2 integrated status LEDs
  • Effective failure diagnosis by integrated system information display (incl. 10 status-LEDs)
  • Object recognition of the ship
  • The electrical conductive bonding line connection between ship and shore is released, after a proper mechanical and electrical contracting is monitored
  • Detection of incorrectly connected clamp or pull off and immediately switching into safe status

Type of Protection: According to ATEX directive 2014/34/EU:
II 2 G Ex eb ib q [ib] IIB T4 Gb (SEK-3)
II 2 G Ex eb ib IIB T4 Gb (SKS-4A)
EC Type Examination (ATEX): PTB 17 ATEX 2024
Power Supply: 110, 120, 220, 230 V ± 10 %, 50-60 Hz ca. 15 VA
type of protection “increased safety“ Ex eb IIB
Output Circuits:
Contact circuits
Max.: 250 V AC, 3 A, 100 VA
type of protection “increased safety“ Ex eb IIB
Output Circuits: Electronical Circuits Max.: Ui = 20 V, Ii = 20 mA, Pi = 400 mW
Li und Ci negligibly small
type of protection “intrinsic safety“ Ex ib IIB
NAMUR-compatible transistor output
PA Measuring Circuit: type of protection “increased safety“ Ex eb IIB
Only for connection to cable relating to SKS-4A marine grounding clamp
Clamp Circuits: Type of protection “intrinsic safety”
Only for connection to cable relating to SKS-4A marine grounding clamp
Max. Uo = 11,2 V, Io = 475 mA, Po = 1,34 W,
Lo = 1 mH, Co = 2,7 μF
Marine Grounding Cable: Max. 50 m
SKS-4A Marine Grounding Clamp:: V2A-Steel
Protection of Enclosure: IP65
Operation Temperature: - 40 °C up to + 60 °C
Dimensions (W x L x H): ca. 650 mm x 380 mm x 245 mm
Weight: ca. 25 kg (without cable and clamp)


  • Very low-ohmic measure line, especially for maritime application
  • Opening of the housing during operation in hazardous areas is allowed
  • 2 clearly visibly LEDs at the device front
  • Easy check of a proper grounding connection due to status LEDs at the grounding clamp
  • Usage under extreme environmental conditions (sturdy stainless steel housing with IP 65) and wide temperature range (-40 °C to +60 °C)
  • Over 30 years of experience with Marine Grounding Systems
Marine Grounding System