05-Protective current transformers Classic Line
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CURRENT TRANSFORMERS Classic Line - Protective Current transformers While measurement current transformers are used to go into saturation above the nominal current range (shown in the excess current limiting factor FS) to CELSA manufactures protective current transformers of accuracy classes 5P prevent the increasing of the secondary current in case of system fault (e. g. and 10P, with an accuracy limit factor of 5 or 10, for the rated outputs indi- primary short circuit) and to protect the equipments in the secondary circuit, a protective c.t. is used to have a saturation far away from its nominal current range in order to protect the switchgear etc. by using distance relays, over- Constructive Characteristics Cases of self-extinguishing polycarbonate V0 according to UL94. Sealable Rated accuracy classes are 5P and 10P. "P" means "protection". The excess terminals, for short-circuiting the secondary winding before opening the mea- terminal cover included, made of clear polycarbonate. Double secondary current limiting factor (in %) is given behind the precision class. It means suring circuit. All are bus type transformers and they include fixing clamps to e.g.10P5, if the primary current is five times higher than the nominal current, the negative deviation of the secondary current from the theoretically seconElectrical Data (according to UNE-EN and IEC 61869-2) dary current calculated by the ratio is not more than 10%. Rated secondary current: 5 or 1 A Application Protective current transformers convert an alternating current of high value Highest voltage for equipment: 720 V into a lower, proportional one, in order to protect an installation by means of Rated insulation level: 3 kV, 50Hz during 1 minute standard relays of rated currents 5 or 1A. Rated continuous thermal current: 1,2 times rated current These current transformers are suitable for indoor use in low-voltage networks. Rated short-time thermal current (Ith): 60 times rated current They are built according to UNE-EN and IEC 61869-2. Rated dynamic current (Ith): 2,5 times Ith Accuracy limit factor: 5 or 10 Thermal class of insulation, according to IEC-60085: E (120°C) IB-50 Protective current transformers Round conductor: IB-50 Technical Features, Executions Rated burdens VA (sec. .../5A , .../1A) Primary rated current A Included: Primary busbar Accesories: Mounting feet / snap on mounting bracket EN 50022-35 Celsa Messgerate España S.L. www.celsamessgerate-spain.com info@celsaspain.com / +34 96 130 93 78

CURRENT TRANSFORMERS IBG-50 Protective current transformers Round conductor: IBG-50 Technical Features, Executions Primary rated current A Rated burdens VA (sec. .../5A , .../1A) Class 5P10 Included: Primary busbar Accesories: Mounting feet / snap on mounting bracket EN 50022-35 IBR Protective current transformers Round conductor: Primary bar: IBR Technical Features, Executions Primary rated current A Rated burdens VA (sec. .../5A) Class 5P5 Class 10P5 Rated burdens VA (sec. .../1A) Class 5P5 Class 10P5 Included: Primary busbar Accesories: Mounting feet Celsa Messgerate España S.L....

CURRENT TRANSFORMERS IBR/1 Protective current transformers Round conductor: IBR/1 Technical Features, Executions Primary rated current A Rated burdens VA (sec. .../5A) Class 5P5 Class 10P5 Rated burdens VA (sec. .../1A) Class 5P5 Class 10P5 Included: Primary busbar Accesories: Mounting feet IER Protective current transformers IER IER-/1-/2-/3 Technical Features, Executions Rated burdens VA (sec. .../5A , .../1A) Primary rated current A Included: Primary busbar (except IER/1) Celsa Messgerate España S.L. www.celsamessgerate-spain.com info@celsaspain.com / +34 96 130 93

CURRENT TRANSFORMERS IRP Protective current transformers On request: Seconday terminals on the long side of the current transformer IRP Technical Features, Executions Rated burdens VA (sec. .../5A , .../1A) Primary rated current A Included: Primary busbar IRM Protective current transformers On request: Seconday terminals on the long side of the current transformer IRM Technical Features, Executions Rated burdens VA (sec. .../5A , .../1A) Primary rated current A Included: Primary busbar Celsa Messgerate España S.L. www.celsamessgerate-spain.com info@celsaspain.com / +34 96 130 93 78