Rudolf Current Transformer MH 800/5A 15Va CL5P10

50/60Hz 0.66 2.5KV

Insulation Class: B

Type: PR

Ratio: 800/ 5A

Burden: 10VA

Class: 5P5

S/No. 4515

Brand: Rudolf

 MH 800/5A CL5P10 15Va

Application

Measuring current transformer is intended to supply to indicative devices, integrated meter and similar apparatus. They are characterized by their accuracy and for saturating at moderate overcurrent. This effect protects the measuring instruments from possible overcurrent. Protective current transformer is intended to supply to protective relays whereby accuracy of CT need to be kept especially during overload conditions.

Construction

The high-grade silicon steel core is annealed, varnished then insulated with polycarbonate core caps. The secondary winding is toroidally wound by high precision semi-automatic machinery. For the tape wound ring type current transformer, the PEW coated windings are then covered with elephantite paper, varnished and double-tapped with PVS tapes. For the encapsulated type current transformer, the windings are enclosed in a compact and heat resistant split cap.

Selection criteria

1) Application – protection or measurement

2) Information on associated relay or instrument - nominal current - accuracy - burden

3) loss contribute from power loss in power line - distance between transformer & instruments - diameter of cable use for connection

4) environmental features - indoor/ outdoor - operating temperature

Correct selection of current transformer is important as the fundamental usage of CT is:

1) to obtain proportional current in accordance to specify accuracy and objectives;

2) to insulate control & measuring / protection from power circuit.