Interrupter Overview

The MicroMax GPS300, GPS350, and GPS360 interrupters are fully programmable, satellite-synchronized interrupters that are capable of interrupting rectifier, bond, or any other current. Cycles can be programmed using any combination of time intervals between 0.1 seconds and 999.9 seconds (in 0.1 second increments) for "Off" and "On" cycles. The interrupters can store up to 9 interruption programs for later use.

MicroMax Interrupters

The MicroMax GPS350 and GPS360 also include a built-in solid state relay (normally closed) that can interrupt either AC or DC, up to 60 A with on/off cycles of less than 4 seconds and 80 A with cycles totaling 4 seconds or longer. The relay can be easily installed without concern for polarity. The GPS360 includes a battery for use without an external power source.

Output parameters are set to accommodate any external relay configuration. Additionally, the menu-driven synchronization configuration allows the interrupter to operate with almost any other brand of GPS synchronized interrupter or data logger. Based on the number of satellites seen and the quality of view, synchronization triggering accuracy is specified to within 1µs with any other MicroMax interrupter.

A unique patent-pending Interference Mode interruption cycle allows rectifier influence studies with greatly increased productivity and ease of data interpretation. By operating in interference mode, it is possible to determine the influence from each individual rectifier being interrupted and get the instant "Off" and "On" pipe-to-soil potentials, all during a single visit to a test station. The influence from up to 99 rectifiers can be studied simultaneously using Interference Mode.

Interference Mode Example

The MicroMax interrupters also allow for full cathodic protection (CP) polarization when the interrupter is not in use (rectifier "on" and no interruption).