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NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF ND10 LOW IMPEDANCE RESTRICTED DIFFERENTIAL EARTH FAULT ND10 LOW IMPEDANCE RESTRICTED DIFFERENTIAL EARTH.

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Presentation on theme: "NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF ND10 LOW IMPEDANCE RESTRICTED DIFFERENTIAL EARTH FAULT ND10 LOW IMPEDANCE RESTRICTED DIFFERENTIAL EARTH."— Presentation transcript:

1 NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF ND10 LOW IMPEDANCE RESTRICTED DIFFERENTIAL EARTH FAULT ND10 LOW IMPEDANCE RESTRICTED DIFFERENTIAL EARTH FAULT

2 NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF 2 PROTECTIVE FUNCTIONS 50/51 Phase overcurrent 50N/51N - 87NHIZ. Residual overcurrent or high impedance restricted differential ground fault 64REF Biased restricted differential ground fault BF Breaker Failure

3 NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF 3 64REF – MOST COMMON APPLICATIONS Like every differential protective function 64REF is largely adopted in case of high selectivity needs. Common applications are generator protection and transformer protection. G ~ 64REF

4 NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF 4 BEFORE ND10 – 87NHIZ ONLY 50 51 NAXX 87N 3 CT’s Low leakage reactance type according to IEC Class PX, TPS or BS Class X METROSIL STABILIZING RESISTOR 3 CT’s Phase Currents SEVERAL CONS Design Large cubicle Connections Low liability External devices EXPENSIVE SOLUTION

5 NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF 5 ND10 – ONE DEVICE ONLY 50 51 ND10 3 CT’s Phase Currents CHEAPER SOLUTION CT Residual current

6 NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF 6 ND10 – 64 REF LOW IMPEDANCE FROM SAME INPUTS 50 51 ND10 64 REF RELIABLE SOLUTION Separate inputs for phase current and current from earth connection. Earth overcurrent and biased restricted earth fault protective functions both contemporaneously performed. Phase overcurrent protective function from same 3 CT’s set. 50N 51N

7 NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF 7 ND10 – MANY ADVANTAGES 50 51 ND10 64 REF EASIEST SOLUTION in case of EARTH FAULT DIFFERENTIAL FUNCTION Biased 64REF is internally calculated. Easy connections. RS and METROSIL design is not required. No one external device is needed for stabilization. Smaller cubicles. 50N 51N

8 NEW PRODUCT FROM THYTRONIC PRO  N ND10 – 64REF 8 Piazza Federico Mistral, 7 20139 Milano (MI) ITALY Tel: +39.02.5749571 Fax: +39.02.57403763 e-mail: thytronic@thytronic.it company web site: www.thytronic.it products web site: www.pro-n.it External Market Support Oscar Ornago tel. +39.02.57495753 e-mail: o.ornago@thytronic.it


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