Generally Inverse time overcurrent relays with Definite Minimum Time feature (IDMT. relays) are used in practice. There are many types of such relays available in relay-. market, viz. normal inverse relays, very inverse relays and extremely inverse relays. The. characteristics of these relays are shown in fig. 1.2. The other types of o/c relays are 3. second relay and 1.3 second relay. This means the time of operation of the relay is either. 3 or 1.3 second at Plug Setting Multiplier (PSM) equal to 10. Long time inverse relays. are used for o/c cum overload application. Voltage restrains o/c relays have their own. application.
Cleanliness Testing. Cleanliness Testing in the printed circuit board and assembly world encompasses the analysis of a specimen to determine the âtypeâ or âamountâ of a contaminant material. This contaminant material can be potentially anything; the material can be large or small and can be unknown, known, expected, or unexpected to the analyst or the requestor.
Clinitest was usually run as a reflex test on urine samples with a negative dipstick glucose result. A negative dipstick glucose assay and a positive reducing test suggest that some substance other than glucose is present in the urine.These sugars include galactose, lactose, and fructose.However, Clinitest, which involves the reduction of colorless cupric ion to colored cuprous ion, is not specific for sugars.ased on this information, many laboratories have discontinued automatic reflex testing for reducing substances in children less than 2 years of age. Clinitest is only performed at the specific order of a physician.