HW1 (DW45) series intelligent universal circuit breaker (hereinafter referred to as circuit breaker) is suitable for AC 50Hz, rated working voltage up to 690V and below, rated current 400A-6300A distribution network, used to distribute electric energy and protect lines and power equipment from overload, undervoltage, short circuit, single-phase grounding and other faults. Circuit breaker has intelligent protection function, high precision selective protection, and improves the reliability of power supply.
At the same time, it has a standard RS485 communication interface, which can carry out four remote functions of “telemetry”, “remote communication”, “remote control” and “remote adjustment”, in order to meet the requirements of cluster control center and automation system.This series of circuit breakers have the characteristics of compact structure, high breaking capacity, no arc distance and so on.
Circuit breakers meet the standards of GB14048.2-2008 “low-voltage switchgear and controlgear low-voltage circuit breakers” and IEC60947-2 “low-voltage switchgear and controlgear circuit breakers”. The circuit breakers have isolation function.
Main Technical Parameters
1.Main technical parameters is in diagram 1.
2. Capacity lower Coefficient is in diagram 2.
| Environment temperature | +40℃ | +45℃ | +50℃ | +55℃ | +60℃ | |
| Permissible continual working current | 2000A | 1In | 0.95In | 0.90In | 0.85In | 0.80In |
| 3200A | 1In | 0.92In | 0.86In | 0.80In | 0.74In | |
| 4000A | 1In | 0.90In | 0.85In | 0.78In | 0.72In | |
| 6300A | 1In | 0.90In | 0.85In | 0.75In | 0.70In | |
diagram 2:
Note: The between ambient temperature and permissible continual working current (Under each ambient temperature condition, basing on the circuit breaker inlet and our let’s acting temperature reaching 110℃)
diagram 1: Main technical parameters
| Type | HWI－2000 | ||||||||
| Frame Rated Current Inm(A) | 2000 | ||||||||
| Rated Current In(A) | 630 | 800 | 1000 | 1250 | 1600 | 2000 | |||
| Rated Working Voltage Ue(V) | AC400,690 50Hz | ||||||||
| Rated InsulationVoltage Ui(V) | AC1000 50Hz | ||||||||
| Rated Impulse Withstandable Voltage Uimp(V) | 8000 | ||||||||
| Working Frequency Withstandable Voltage | AC3500V 50Hz,1min | ||||||||
| Quantity of poles | 3,4 | ||||||||
| Rated Current of N-poles IN(A) | 50%In,100%In | ||||||||
| Full Disconnection Time (ms) | 25～30 | ||||||||
| Closing Time(ms) | 60 | ||||||||
| Limited Short-circuit Breaking Capacity Icu(kA)(effctive value) | AC400V | 65 | 65 | 65 | 65 | 65 | 65 | ||
| AC690V | 50 | 50 | 50 | 50 | 50 | 50 | |||
| Operation Short-circuit Breaking Capacity Ics(kA)(effctive value) | AC400V | 65 | 65 | 65 | 65 | 65 | 65 | ||
| AC690V | 50 | 50 | 50 | 50 | 50 | 50 | |||
| Rated Making Capacity of Short Circuit Icm(kA)(peak) | AC400V | 176 | 176 | 176 | 176 | 176 | 176 | ||
| AC690V | 105 | 105 | 105 | 105 | 105 | 105 | |||
| Rated Stand Current For Short- time(1s)Icw(kA)(effctive value) | AC400V | 50 | 50 | 50 | 50 | 50 | 50 | ||
| AC690V | 40 | 40 | 40 | 40 | 40 | 40 | |||
| Operation Performance | Electric Life | AC400V | 1500 | 1500 | 1500 | 1500 | 1500 | 1500 | |
| AC690V | 500 | 500 | 500 | 500 | 500 | 500 | |||
| Mechanical Life | Non-Maintenance | 5000 | 5000 | 5000 | 5000 | 5000 | 5000 | ||
| Maintenance | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | |||
| Intelligent controller | √ | √ | √ | √ | √ | √ | |||
| Mounting means | Fixed type | √ | √ | √ | √ | √ | √ | ||
| Drawer-out type | √ | √ | √ | √ | √ | √ | |||
| HWI-3200 | HWI-4000 | HWI-5000 | HWI-6300 | |||||||
| 3200 | 4000 | 5000 | 6300 | |||||||
| 2000 | 2500 | 2900 | 3200 | 3200 | 3600 | 4000 | 4000 | 5000 | 5000 | 6300 |
| AC400,690 50Hz | AC400,690 50Hz | AC400,690 50Hz | ||||||||
| AC1000 50Hz | AC1000 50Hz | AC1000 50Hz | ||||||||
| 8000 | 8000 | 8000 | ||||||||
| AC3500V 50Hz,1min | AC3500V 50Hz,1min | AC3500V 50Hz,1min | ||||||||
| 3,4 | 3,4 | 3,4 | ||||||||
| 50%In,100%In | 50%In | 50%In | ||||||||
| 25～30 | 25～30 | 25～30 | ||||||||
| 60 | 60 | 60 | ||||||||
| 80 | 80 | 80 | 80 | 80 | 80 | 80 | 100 | 100 | 100 | 100 |
| 65 | 65 | 65 | 65 | 65 | 65 | 65 | 85 | 85 | 85 | 85 |
| 80 | 80 | 80 | 80 | 80 | 80 | 80 | 100 | 100 | 100 | 100 |
| 65 | 65 | 65 | 65 | 65 | 65 | 65 | 75 | 75 | 75 | 75 |
| 220 | 220 | 220 | 220 | 220 | 220 | 220 | 220 | 220 | 220 | 220 |
| 143 | 143 | 143 | 143 | 143 | 143 | 143 | 145 | 145 | 145 | 145 |
| 80 | 80 | 80 | 80 | 80 | 80 | 80 | 100 | 100 | 100 | 100 |
| 50 | 50 | 50 | 50 | 50 | 50 | 50 | 70 | 70 | 70 | 70 |
| 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| 2500 | 2500 | 2500 | 2500 | 2500 | 2500 | 2500 | 2500 | 2500 | 2500 | 2500 |
| 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 |
| √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
| √ | √ | √ | √ | |||||||
| √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
Over-current Protection Feature
Over-current protection refers to two kinds of protection: line protection and neutral protection (exclude three pole breaker). In case of line over-current protection, current and time are set by the manufacturer conventionally as per user’s demands (user can also set the value themselves); In case of neutral over-current protection, current and time correspond to setting value of line automatically at the ratio of 50% or 100% In (rating of neutral phase), which can be determined by users.
1.Over-load Protection
Inverse long-delay overload protection, setting current Ir1 is adjustable; When this function is “OFF”, circuit won’t be broken off where as alarm will be sent out. Long-delay overload time tL is adjustable.
Inverse Long-delay Action Feature For Over-load (M Type Intelligent Controller)
| Adjusting area of setting current Ir1 | (0.4~1.0) In adjusting successively (≤2% percent In for each step) | ||||||
| Allowable error of setting current ±10%Allowable error of setting time ±15% | Current | Acting time | |||||
1.05 Ir1 | ≥ 2h no acting | ||||||
1.30 Ir1 | ≤ 1h acting | ||||||
1.50 Ir1 | 15s | 30s | 60s | 120s | 240s | 480s | |
2.00 Ir1 | 8.4s | 16.9s | 33.7s | 67.5s | 135s | 270s | |
| Thermo-memory Function | ≤30min (Memory can be cleared in case of power failure) | ||||||
1.1 Short-delay for Short circuit Protection
Short-delay for Short circuit Protection setting current Ir2 can adjust, Inv- erse action feature in low current value; switch to definite action feature aut- omatically when the over current is above 8 Ir1; definite action feature indic- ated when short-time action feature (I2t) is “OFF”.
Short-delay for short-circuit time ts can adjust.
Short -delay Action Feature For Short circuit (M Type Intelligent Controller)
| Adjusting area of setting current Ir2 | (0.4~15)In adjusting successively ≤2% for each step | ||||||
| Allowable error of setting current ±10%Allowable error of setting time ±15% | Current | Acting time | |||||
| I≥Ir2 I≤8 Ir1 | Inverse time | I2Ts= (8I )2tsr1 | |||||
| I≥Ir2 I＞8 Ir1 | definite | Setting time ts(s) | 0.1 | 0.2 | 0.3 | 0.4 | |
| Returnable time(s) | 0.06 | 0.14 | 0.23 | 0.35 | |||
| Thermo-memory Function | ≤15min (Memory can be cleared in case of power failure) | ||||||
1.2 Instantaneous For Short-circuit Protection
Instantaneous For Short-circuit setting current Ir3 can adjust, when set in
“OFF”, Instantaneous For Short-circuit is not work.
Instantaneous Action Feature For Short-circuit (M Type Intelligent Controller)
| Frame Rated Current Inm(A) | Adjusting area of setting current Ir3 |
| HWI-2000 | In~50KA+OFF |
| HWI-3200,4000 | In~75KA+OFF |
| HWI-5000,6300 | In~100KA+OFF |
| Tolerance of setting current ±15% | adjusting successively ≤4% for each step |
1.3 Earthed Fault Protection
Earthed Fault Protection setting current Ir4 can adjust, delay time tG can adjust. When set in “OFF”, circuit won’t be broken off where as alarm will be sent out.
Action Feature For Earthed Fault
| Adjusting area of setting current Ir4 | (0.2~0.8)In adjusting successively max2400A,min160A,≤2% for each step | ||||||
| Allowable error of setting current ±10%Allowable error of settingtime ±15% | Current | Acting time | |||||
| I≥1.1Ir4 | definite | Setting time tG(s) | 0.1 | 0.2 | 0.3 | 0.4 | |
| Returnable time(s) | 0.06 | 0.14 | 0.23 | 0.35 | |||
