42 testing, analysis and evaluation of low and medium voltage circuit breakers and associated switchgear accessories including voltage transformers, current transformers, meters and relays, power transformers up to 345kv primaries, low and medium-voltage motor control centers and their associated starters and/or disconnect switches, power factor correction capacitor installations, variable frequency drives, harmonic filters and power electronics, namely, UPS systems and line conditioners of others for the purpose of certification