Rishabh Low Voltage Current Transformer Ct X'mer 50/21 (30)
Brand: RISHABH
Measurement type CTs are required to transform the primary current, at various classes of accuracy, as specified by the class designation, over a current range from 1 to 120 percent of its rated primary ratio.
- Four variant 50/5A; class 1; VA:1 , 100/5A; class 1; VA:2.5, 125/5A; class 1; VA:3.75 and 150/5A; class 1; VA:5
Current transformers convert an alternating current usually high in to a proportional lower one, depending on their use.The design of this type of transformer requires the inclusion of a core and winding which will when connected to its rated burden; perform within the limits of error as indicated by the standard’s specification. It is an advantage for a measurement type transformer to saturate above this range, which provides a protection against damage to instruments by limiting the secondary current when surge currents or faults appear in the primary circuit
- Applicable standard: - IEC-61869-1&2 / IEC- 60044 -1, BS 3938, IS 2705 -1,2&3.
- Connection: - Two connection on each side. M4 screws with self lifting clamp strap assembly for RishXmer series and 1 connection on each side M4 screws with self lifting clamp strap for Rish CTseries.
- Insulation class: -E (120°C max)
- System voltage: - 720V maximum
- Test voltage: - For Ring (Window) type CT: 4KV 50 Hz for 1 min (except for 50/30 CTtype and 50/50 CTtype where test voltage is 3KV 50 Hz for 1 min) - For Wound type CT: 3KV 50 Hz for 1 min
- Operating frequency: - 50Hz / 60 Hz
- Rated primary rating: - 15A to 150A
- Rated secondary output: - 5A standard (1Aon request)
