ACB Catalog
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SHIHLIN ELECTRIC & ENGINEERING

6.1 Shunt release, Undervoltage release, Motor-driven mechanism, Closing electromagnet 7. Secondary connection diagram 7.1 M series intelligent controller 7.2 H series intelligent controller (Communication type) 8. Outline and installing dimension 8.1 Withdrawable circuit breaker 8.2 Fixed circuit breaker 9. Mounting, usage and maintenance 9.2 Usage of intelligent controller 9.3 Plugging into the breaker and drawing out the breaker 10. Regular failure and obviate methods

1. BW series specification Frame (AF) Fixed type Drawout type Fixed type Drawout type Drawout type Adjustable range of rated current (A) Max. rated operation voltage (Ue) V (50/60Hz) Rated insulation voltage (Ui) V (50/60Hz) Rated impulse withstand voltage (Uimp) kV Rated current of N pole (A) Rated breaking capacity (kA) Rated short time withstand capacity AC 400V (Icw) kA (1 sec) Electrical control type Standard type (M Type) Communication type (H Type) Mechanical life time (without Maintenance) Horizontal / Vertical Horizontal Vertical Auxiliary switch (Standard device) Motor drive...

2.1 Purpose Shihlin's BW series of air circuit breakers (hereafter refers to as breaker) are available in the circuit of AC 50/60Hz with rated voltages of 400V, 690V and rated continuous current from 630A to 6300A. The BW offers electric energy distribution and circuit protection, making it the ideal solution for current supply device damages which made by overload, under-voltage, short-circuit and single-phase earthing in distribution network. It is suitable for intelligent and selective protection with accurate action to improve power distribution reliability and avoid unnecessary power...

1. Primary circuit terminal (stationary) 2. Cradle 3. Shutter 4. Drawout handle 5. Secondary circuit terminal (movable) 6. Auxiliary contacts 11 7. Under-voltage release 8. Shunt release 9. Closing coil 10. Operation mechanism 11. Intelligent controller 12. Panel 13. Motor-driven mechanism

1. Mechanical reset button 設置 2. Rated current label 警報 ALARM MEMORY 3. Power meter window 4. Ammeter window 5. Protection category indicator 6. Status indicator 7. Function button 8. Position lock 9. Communication indicator 10. Programming port

4.1 Intelligent controller function 4.1.1 Protection features 4.1.1.1 Overload long time-delay trip protection features Table 1 for reference of technical parameters of overload long time-delay protection features Table 1: Technical parameters of overload long time-delay protection features Ir1 = In ___ Setting current value Distribution or motor protection Inverse time delay setting value tL (s) (corresponding to 2lr1) Operating characteristic Generator protection N-phase protection Inverse time-delay setting value tL (s) (corresponding to 2lr1) Characteristic curve Curve 1 ~ Curve 6*...

Short time protection has two modes: 1. Inverse time protection: when the fault current exceeds setting current value of definite time, if it is curve (1~5), controller protects according to the curve (1~5) of overload long time delay, but the speed 10 times of it. (In other words, it equals to the tenth of the delay tripping time, which computed from the overload long time curve expression.) If it's curve 6, then calculate the inverse time delay tripping time from the expression of short-circuit shot time delay curve 6 characteristic. 2. Definite time protection: when the fault current...

4.1.1.3 Short circuit instantaneous protection features Table 3: Technical parameters of short circuit instantaneous protection features Ir3 Setting current value Operating characteristic Actuation time > 1.15 Ir3 tripping < 100ms (Including original break time of the circuit-breaker) Note : If the controller is Frame I, the setting values of instantaneous protection is 1.01 ln ~ 50kA +OFF. If it is Frame II, that setting value is 1.01 ln ~ 75kA +OFF. And 1.01 ln ~ 100kA +OFF as Frame III. 4.1.1.4 Unsymmetrical earthing or leakage protection features Table 4: Technical parameters of...

There are two styles of above two protections: 1. Inverse time protection: TG=tG x KG x If / I In the expression: TG defines as delay actuation time of actual protection tG defines as setting value of definite time delay KG defines as coecient value of inverse time If defines as setting current value I defines as real working current Delay actuation time of inverse time protection could be obtained from above expression, but it is greater than or equal to setting value of definite time delay. It is definite time protection when KG is in OFF position. 2. Definite time protection: delay...

(1) Specification of ZCT1 transformer Primary current Secondary current Note : 1. 200-400A/1A and 600-2000A/5A are customizable. 2. ZCT1 supplies bus bar through layout for Frame I. If ZCT1 is chosen for FrameII and Frame III, then use the way of pulling on cables. (2) Specification of ZT100 transformer Primary current Secondary current 4.1.1.5 Overload supervision and control protection features Table 5 for reference of technical specification of short circuit instantaneous protection features Controller is programmed output two passive signal contacts, which can charge of overload...

Table 6 for reference of technical specification of imbalance current protection features Unbalance current and Loss of phase and 3-phase are protected by this imbalance current protection. Here is the expression of imbalance current ratio: =| l- lav| / lav ( lav is average of 3-phase) Imbalance current protection feature is a kind of definite time protection. The setting value of time delay use T mark, protection of imbalance currant with the function of alarming without tripping when T position. Table 6: Technical specification of imbalance current protection features = Setting value of...

4.1.2.6 MCR make-break and overstep tripping (optional) Make-break and overstep tripping protections are parts of back-up functions, which are optional. They are both instantaneous tripping actions whose tripping value relate to their service breaking and ultimate breaking capacities. Usually, MCR current is 40kA, 60kA, 80kA, overstep tripping current is 50kA, 75kA, 100kA The factory defaults of current values are 40/50kA for Frame I, 60/75kA for Frame II, 80/100kA for Frame III). Fault current signal sends out tripping instruction directly by hardware comparison circuit. MCR make-break...