Coordinated Facility Protection Catalog - Erico

MGA Tester
Features
The MGA-TESTER is designed for rapid testing of the
integrity of both metal oxide varistors (MOVs) and
gas arresters (gas discharge tubes). This portable
microprocessor unit is designed to test surge
components with ratings up to 900V.
Because standard MOVs and gas arresters do not
provide the user with a visual indication of the
integrity of the protection capacity an external means
of testing is required. It is impossible to predict when
these failures will occur without some form of testing.
Model MGATESTER
Dimensions H x D x W: mm (in) 195 x 43 x 99 (7.67 x 1.70 x 3.90)
Weight: kg (lbs) 0.68 (1.50)
www.erico.com 75
Special Application Products
• 1mA nominal (0.8 - 1.2mA) test current
• 1kV/s nominal (0.8-1.2kV/s) test voltage slwe rate
• 3 digit LCD display
• Test leads supplied with probes and removable crocodile clips
As MOVs approach the end of their life cycle they
exhibit a change in tolerance levels. The MOV &
Gas Arrester Test Unit is specifi cally designed to
identify this situation and allows the operator to
effect remedial replacement to the devices which are
nearing the end of their life cycle. The MOV and Gas
Arrester Test Unit will also indicate if a MOV is non
functional.