NDK Control Transformer
1.1 Frequency: AC 50Hz/60Hz;
1.2 Application: for control power supply of apparatus, partial illumination and indicator light of machine tool and other mechanic equipments.
1.3 Standard: Q/ZT258.
SKU: ELC6277 Categories: Control Transformers, Electrical Products, Low Voltage Electric, Low Voltage VT & AVR & CT & PT Tags: Control Transformers, Low voltage electric, Low Voltage VT & AVR & CT & PT
1.1 Function Control electric circuits. Protect people against indirect contacts and additional protection against direct contacts. Protect installations against fire hazard due to insulation faults. Residual current circuit breakers are used in housing, tertiary sector and industry. 1.2 Selection Detectable wave form Type B Tripping is ensured for sinusoidal AC residual currents pulsed DC residual currents, alternating residual sinusoidal currents up to 1000Hz, pulsating direct residual currents and for smooth direct residual currents, whether applied suddenly or increasing slowly. Tripping sensitivity 30mA - additional protection against direct contact. 100mA - co-ordinated with the earth system according to the formula IΔn＜50/R, to provide protection against indirect contacts; 300mA - protection against indirect contacts, as well as fire hazard. Tripping time Instantaneous It ensures instantaneous tripping (without time-delay). 1.3 Approvals and certificates CE, KEMA 1.4 Add-on devices AX-5 auxiliary contacts TC-1 terminal cover CATALOG NL210 Residual Current Operated Circuit Breaker without Over-current Protection PDF
1.1 Function protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation. NB1 circuit-breakers are used in domestic installation, as well as in commercial and industry electrical distribution systems. 1.2 Selection Technical data of the network at the point considered:short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,network normal voltage. Tripping curves: B curve (3-5In) protection for people and big length cables in TN and IT systems. C curve (5-10In) protection for resistive and inductive loads with low inrushcurrent. D curve(10-14In) protection for circuits which supply loads with high inrush current at the circuit closing (LV/LV transformers, breakdown lamps). 1.3 Approvals and certificates Detailed information, please refer to Certificates Table on the last page.
1.1 Selection Rated residual operating current I∆n = 30 mA: additional protection in the case of direct contact. Tripping class AC class – Tripping is ensured for sinusoidal, alternating currents, whether they be quickly applied or slowly increase. Tripping curve B curve (3-5 In) protection and control of the circuits against overloads and short-circuits; protection for people and big length cables in TN and IT systems. C curve (5-10 In) protection and control of the circuits against overloads and short-circuits; protection for resistive and inductive loads with low inrush current. 1.2 Approvals and certificates CATALOG NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection PDF