Off-Board Charger Calibration Specification:

Verification Regulation for Off-Board Chargers of Electric Vehicles (Trial) JJG 1149, Calibration Specification for Battery Charge and Discharge Testers JJF (Military Industry) 108

Instrument Calibration Parameters:

DC Electrical Energy (30V～1000V), (0.5A～250A)

DC Voltage 50V～1000V

DC Current 5A～250A

DC Power (5～250) kW

Time (0-100) s

GRG METROLOGY was established in 2002 and is a leading third-party metrology and testing listed company.

Focusing on industrial needs, GRG METROLOGY has expanded into new infrastructure, digital transformation, and industries related to daily necessities, providing comprehensive one-stop services for the entire supply chain in strategic sectors such as special equipment, aviation, integrated circuits, low-altitude economy, new energy, 5G communications, intelligent connected vehicles, software and information technology, and life sciences.

GRG METROLOGY's qualifications are at the industry-leading level, with the total number of CNAS-accredited projects ranking first in the industry for five consecutive years. It has CNAS accreditation for 45,053 parameters, CMA accreditation for 65,113 parameters, and CATL accreditation for 7,922 parameters.

GRG METROLOGY's headquarters and subsidiaries have received nearly 500 authoritative qualifications and honors from industry and social organizations, including 22 high-tech enterprises.