Subpar Products. DO NOT BUY!
The products do not follow quality standards and are a fire hazard. The manufacturer denied refunds and did not respond to our requests.
Below are the testing results for the devices made by GEYA.
Direct Current Surge Protective Device (GSP9-C40PV)
• Unit: PV type 3P 1000VDC Imax40kA Type II
• Procedure: The device was subjected to a high-voltage insulation resistance test and a continuous 1000VDC leakage current diagnostic.
• Result: Under continuous 1000VDC application, the internal MOVs exhibited an abnormally high leakage current, indicating poor varistor grain structure and an inability to maintain proper clamping voltage.
AC Surge Protective Device (GSP9-C40)
• Unit: 2P 275VAC Imax 40kA Type II
• Procedure: Subjected to 275VAC continuous voltage application and baseline continuity testing.
• Result: The AC SPD showed thermal creep during baseline voltage application. The thermal disconnect mechanism showed high resistance.
AC MCBs (GYM9H Series)
• Units: 2P Curve C 63A, 2P Curve C 32A, 1P Curve C 10A, 1P Curve B 20A, 1P Curve C 32A, 1P Curve C 20A (All 10kA rated)
• Procedure: Breakers were subjected to a 1.45x nominal current thermal overload test using a programmable load bank.
• Result: The breakers failed to actuate the trip mechanism. Casing temperatures rose significantly above the manufacturer's specified operational thresholds. The test was manually aborted before internal melting occurred to preserve the units for further evaluation.
DC MCB (GYM9H-DC)
• Unit: 500VDC 2P Curve C 32A 6kA
• Procedure: The breaker was subjected to its rated 32A load at 500VDC, and manually toggled under load to observe DC arc suppression.
• Result: The internal magnetic blowout fields were insufficient. Manual switching resulted in sustained, visible arcing and localized heating at the terminals. The test was halted to prevent casing fire.
Contactor (GYHC)
• Unit: 2P AC 63A 2NO 220VAC control voltage
• Procedure: The 220VAC coil was energized to close the contacts against various inductive and resistive loads.
• Result: The electromagnetic coil chattered continuously on inductive loads above 15A. The contacts stuck together upon removal of the control voltage, requiring manual physical agitation to break the connection.