GDGK-501 e fana ka matla ho li-circuit breakers kapa li-switches tse ling tsa HV.
GDSL-BX-200 Primary Current Test Set, e sebelisoa haholo ho lekanya bakeng sa transformer ea hajoale, mosireletsi oa enjene, switch ea moea, switch cabinet, circuit breaker, screen protection le joalo-joalo.