TBBZ
Application: for enhancement of power factor, lowering circuit loss and improve voltage quality in 6.6kV/12kV power distribution system.
Standards: IEC 60871-1
Parameters: Rated voltage: 6-10kV.
Rated capacity: 100-1200kVar.
Feature: 1.Perfect protection function.
2.Compact design and reliable operation.
3.Advanced control mode. provide for control power transformer itself.
4.Convenient for installation, easy maintenance.
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Rated voltage: 240V;
Frequency: 50Hz;
Electromagnetic release type: C, D;
Number of poles: 1P+N;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity(Icu): 4500A;
Short-circuit breaking capacity(Ics): 4500A;
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1.1 Function
protection of circuits against short-circuit currentsprotection of circuits against overload currents,switch,isolation,
NB1-63G 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 consideredshort-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:
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protection for people and big length cables in TN and IT systems.
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1.1 Function
Personnel and fire protection: Cable and line protection against overload and short-circuits.
1.2 Selection
Rated residual operating current
I∆n ≤30 mA: additional protection in the case of direct contact.
I∆n ≤300 mA: preventative fire protection in the case of ground fault currents.
Tripping class
AC class
Tripping is ensured for sinusoidal,alternating currents, whether they be quickly applied or slowly increase.
A class
Tripping is ensured for sinusoidal, alternating residual currents as well as for pulsed DC residual 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.
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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.
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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;
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Tripping time
Instantaneous
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1.3 Approvals and certificates CE, KEMA
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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.
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Detectable wave form
AC class
Tripping is ensured for slowly increasing sinusoidal AC residual currents.
A class
Tripping is ensured for sinusoidal AC residual currents and for pulsed DC residual currents, whether applied suddenly or increasing slowly.
S, G/SI class
Tripping is ensured not only for sinusoidal AC residual currents but also for pulsed DC residual currents whether applied suddenly or increasing slowly. S, G/SI type with filters against spurious tripping caused by harmonics and transient surges.
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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
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HDLRT0 Fuse for Distribution
HDLRT0 Fuse for Distribution
1.Electric ratings: AC50Hz, AC380V/DC400V, up to 1000A;
2.Application: for protection of power distribution apparatus against over-load and short circuit;
3.Standard: IEC 60269.
