Four different types of CP Current Interrupters are available.

Variation 1
Stand alone unsynchronised Interrupter for simple Analogue DCVG Surveys. DCVG Pulse Frequency only. Not for use with CIPS equipment.

Variation 2
Satellite Synchronised Interrupter for one pass combined DCVG/CIPS Surveys using Quantum Equipment. Operated at DCVG Pulse Frequency only. (0.45 seconds ON, 0.8 seconds OFF)

Variation 3
Satellite Synchronised Interrupter for DCVG/CIPS Surveys. Operated at any of five ON/OFF switching sequences.
A) For straight DCVG or combined DCVG/CIPS 0.45 seconds ON, 0.8 seconds OFF (1.25 seconds)
B) DCVG (reverse) 0.8 seconds ON, 0.45 seconds OFF (1.25 seconds)
C) DCVG (reverse) 1.6 seconds ON, 0.9 seconds OFF (2.5 seconds)
D) Conventional CIPS 3 seconds ON, 2 seconds OFF (5 seconds), or
E) Conventional CIPS 4 seconds ON, 1 second OFF (5 seconds)

Variation 4
Satellite Synchronised Interrupter for DCVG/CIPS Surveys. Operated at the same selected ON/OFF switching sequences as Variation 3 but with a 3 channel built in Data Logging capability to record all satellite information, time, location, current (T/R output), switching sequence local pipe to soil potentials etc. This type of Interrupter is able to provide detailed data capable of being used to study interference and to settle any timing disputes that arise with CIPS equipment that is currently ignored or remains unresolved at present by all technique operators.

Note:- All Interrupters are fitted with 180 Amp, 200V DC solid state switch. The 180 Amp to include Spikes caused when Rectifiers are switched ON/OFF. All Interrupters except variation 1 have their own permanently connected Satellite aerial, checking Synchronisation every 5 seconds.