目前的变压器

Primary current(A):30A-5000A Secondary current:5A,1A Class:1.0,3.0 Frequency:50-60HZ Rated load:5VA-15VA Standard approval:BS7626,IEC185 Shore-time thermal current:1th=60x1h Rated security coefficient:Fs<5 SFIM current transformers comply with the highest international quality standards with professional experience in the industry.SFIM products have built a reputation for quality and modern design at competitive prices. SFIM current transformers are made according to the IEC44-1,BS3938,and DIN 42600 standards. Case:all cases are made of non-combustible plastic material according to UL-94VO. Insulation class:E(120max) Ambient temperature:-20+45(+65) Storage temperature:-50+80 Test voltage:4Kveff 50HZ lmin Operating frequency:50HZ/60HZ Rated secondary current:5A or 1A Rated burden:1VA,1.5VA,2.5VA,3.75VA,5VA,7.5VA,10VA,12.5VA.,15VA,20VA,30VA,45VA,60VA Accuracy:0.5 for exact measuring.(for kwh measuring),1.0 for general measuring with switch board instruments,3.0 for other not so exact measuring. Connection:the secondary connections are with two terminals(two terminals for each connection),use M4 or M5 screws to fix which can be handled easily and secure low contacted resistance. Accessories:the terminal cover is executed to assure the lead seal.This execution complies with the VGB4 protection of DIN57106 standard. This type current transformer is made according to BS3938 with ABS non-combustible plastic case.