RDW8HU Air circuit breaker

RDW8HU series universal circuit breaker (hereinafter refered to as circuit breaker, suitable for AC 50Hz/60Hz, rated current 630 ~ 6300A, rated insulation voltage 1250v,rated working voltage of AC800, AC1000.In the AC1140v distribution network, it is used to distribute power and protect ines and power equipment from overload,undervoltage, short circuit, single-phase arounding and other fauts, and it has isolation funcion.

Cicuit breakers have a variety of the protection function, while achieving highly accurate selective protection, can also avoid unnecessary sudden power failure,improve the reliability and safety of the power supply system.

Products comply with: GB/T 14048.2 standard.

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Product Detail

Selection Guide

RDW8

Drawer level

AC230V

No undervoltage

Product code

Breaking grade

Frame current

Rated current

Number of poles

Controller

Installation mode

Control voltage

Attachments

High voltage intelligent
Universal circuit breaker

25:2500(06-25)
40:4000(08-40)
63:6300(40-63)

06:630A
08:800A
10:1000A
12:1250A
16:1600A
20:2000A
25:2500A
29:2900A
32:3200A
36:3600A
40:4000A
50:5000A
60:6000A

3:3P
4:4P

M: Standard type(Digital display)
R: Enhanced type(Liquid crystal Display)
H: Advanced type(LCD with communication)

Drawer level
Drawer vertical
Fixed level
Fixed vertical

AC230V
AC400V
DC220V
DC110V

Interphase partitio

Quadruple transformation

Door frame

No undervoltage

Undervoltage instantaneous

Under calendering time

Mechanical interlocking

One lock, one key

Two locks and one key

Three locks, two keys

It's 50-50

Six on, six off

● RDW8HU default standard configuration: shunt, closing, electric operation, 4 group conversion, door frame, interphase partition

● For example: need to order a RDW8HU-2500, three-pole drawer, rated curent 1250A,inteligent controller for R type, control voltage AC230V

● Expressed as: RDW8HU-25 12/3R drawer level AC230V without undervoltage.

Normal Working Conditions and Installation Conditions

Normal working condition

■ The ambient air temperature is -5℃ ~ +40℃, and the average value of 24h does not exceed +35°C;

Note: If the upper limit exceeds +40℃ or the lower limit is lower than -5℃, the user needs to negotiate with the manufacturer.

■ The elevation of the installation site does not exceed 2000m;

Note: Consult with the manufacturer for the circuit breaker used in the working environment with an altitude of more than 2000m.

■ The relative humidity of the atmosphere does not exceed 50% when the ambient air temperature is +40℃; It can have higher relative humidity at lower temperatures.For example, the wettest month has an average maximum relative humidity of 90%, while the the average minimum temperature of the month is +20℃, and treatment measures should be taken for the occasional condensation due totemperature changes.

■ The pollution level is 3;

■ When the rated working voltage of the main circuit is AC 800V ~ AC1140V, the control circuit and auxiliary circuit need to be isolated fromthe main circuit by transformer, and the maximum working voltage of the control circuit and auxiliary circuit is AC400V, control circuit and auxiliary circuit instalation category is Ⅲ;

■ The circuit breaker is suitable for electromagnetic environment A;

■ Use category B.

Normal installation condition

■ Installation of fixed circuit breaker: The circuit breaker is placed in the distribution cabinet and secured with M10(more than 2500A shell frame) bolts and washers.

The circuit breaker is installed smoothly without additional mechanical stress.Avoid circuit breaker damage or poor contact of main busbar;

■ Installation of drawer type breaker: Remove the circuit breaker body from the drawer seat,installthe drawer seat in the distribution cabinet first,and tighten with M10(more than 2500A shell frame) bolts and washers. Circuit breaker mounting level stable, there should be no additional mechanical stress, so as to avoid circuit breaker damage or poor contact between the main bus and the secondary circuit,after the completion of the circuit breaker body into the drawer seat connection position;

■ The circuit breaker should be installed in a place without explosion risk and conductive dust, without enough to corrode metal and destroy insulation;

■ The protection levelis IP20, When the circuit breaker is installed in the cabinet and the door frame is installed, the protection level can reach IP40.

Normal storage and transport conditions

■ The lower limit of temperature is not less than -25℃, the upper limit is not more than +55℃; Relative humidity (+25℃) does not exceed 95%;

■ The product should be handled gently during transportation, and should not be inverted to avoid violent collision.

Technical Parameters and Performance

Number of poles(Table 1)	3P/4P
Frequency	50/60Hz
Rated operating voltage Ue(V)	AC800V/AC1000V/AC1140V
Rated impulse withstand voltage Uimp(kV)	AC12kV
Rated insulation voltage Ui(V)	AC1250V
Frame grade	25HU			40HU			63HU
In(A)
630	●
800	●			●
1000	●			●
1250	●			●
1600	●			●
2000	●			●
2500	●			●
2900				●
3200				●
3600				●
4000				●			●
5000							●
6300							●
Breaking capacity（AC800V）	AC800V	AC1000V	AC1140V	AC800V	AC1000V	AC1140V	AC800V	AC1000V	AC1140V
Rated limit short-circuit breaking capacity Icu(KA)	60	55	50	75	60	60	85	66	66
Rated operating short-circuit breaking capacity Ics(KA)	60	55	50	75	60	60	85	66	66
Rated short-term endurance Icw/1s(KA)	60	55	50	75	60	60	85	66	66
Full segment time (no additional delay)	25~30ms
Closing time	≤70ms
Mechanical life (with maintenance)	20000			20000			13000
Mechanical life (no maintenance)	10000			10000			6500
Electrical life	7000			6000			1500
Connection mode (horizontal)	●
Connection mode (vertical)	●
Connection mode (top horizontal and bottom vertical) Connection mode (vertical up and horizontal down)	●

Note: The mechanical life of drawer seat is 100 times, from "separation" to "connection" to "separation" is once, and the operation cycle is 1 time /2min.

Intelligent Controller Protection Features (Liquid Crystal Type)

①Intelligent controller model (corresponding product model);

②LCD liquid crystal display window: can display each phase current value, voltage value, setting parameter, fault current,flow, trip time and information query parameters;

③Overload long delay fault indication;

④Short circuit short delay inverse time fault indication;

⑤Ground or neutral fault indication;

⑥Setting key:Quickly switch to the parameter setting main menu,(in the password input interface is "Right" key);

⑦Measurement key:Quickly switch to the measurement default main menu,(under the password input interface is"Left"key);

⑧Up key:Move the menu content up at the current level,or change the selection up Parameters;

⑨Down key:Move menu contents down at the current level,or change the selection down Parameters;

⑩Back key:Exit the current level to enter the upper-level menu,or cancel the current parameter the selection of;

⑪Ok key:Enter the next level menu that the current item points to,or proceed to the current parameter Select,store the changes made;

⑫Query key:Switch to the history and maintenance theme menu;

⑬Protection parameter setting key:Switch to the protection parameter setting theme menu;

⑭Short circuit instantaneous fault indication;

⑮Short-circuit short-delay fixed time fault indication;

⑯Communication indication:

Profibus:no communication when off,communication constant light;

Modbus:turns off when no communication is available and blinks when communication is available.

⑰Normal indication:in the power state,the working state is normal,the LED is always green flashing;

⑱Fault/alarm indicaton:the "fault/alarm"LED does not light up during normal operation; breakdown when tripping,the "Fault/alarm"LED is red and flashes rapidly;In case of alarm when the LED red constant bright;

⑲Reset button:When the intelligent controller is in the fault/alarm state,it needs to restore to normal work state,press this key to clear the intelligent controller fault/alarm indication.

Technical Parameters

Action current set value Ir(Table 2)				(0.4~1.0)In+OFF						Current tolerance				±10%
Applied current I								Set a trip time
1.05Ir								>2h does not trip
1.3Ir								< 1h Trip
Protection characteristic type	Fault current	Set time Tr (s)
SI Standard inverse time	1.5Ir	0.61	0.98	1.47	2.46	3.68	4.91	6.14	9.21	11.05	17.19	24.56	36.84	49.13	61.41	73.69	85.97
	2Ir	0.36	0.57	0.86	1.43	2.15	2.87	3.58	5.37	6.45	10.03	14.33	21.49	28.65	35.82	42.98	50.15
	6Ir	0.14	0.22	0.33	0.55	0.82	1.1	1.37	2.06	2.47	3.84	5.48	8.22	10.96	13.7	16.45	19.19
	7.2Ir	0.12	0.2	0.3	0.5	0.74	0.99	1.24	1.86	2.23	3.48	4.97	7.45	9.93	12.42	14.9	17.38
VI velocity inverse time	1.5Ir	2	3.2	4.8	8	12	16	20	27	36.6	56	80	120	160	200	240	280
	2Ir	1	1.6	2.4	4	6	8	10	13.5	18	28	40	60	80	100	120	140
	6Ir	0.2	0.32	0.48	0.8	1.2	1.6	2	2.7	3.6	5.6	8	12	16	20	24	28
	7.2Ir	0.16	0.26	0.39	0.65	0.97	1.29	1.61	2.18	2.9	4.52	6.45	9.68	12.9	16.13	19.35	22.58
EI(G)Express inverse time(General distribution protection)	1.5Ir	8	12.8	19.2	32	48	64	80	108	144	224	320	480	640	800	960	1000
	2Ir	3.33	5.33	8	13.33	20	26.67	33.33	45	60	93.33	133.33	200	266.67	333.33	400	433.33
	6Ir	0.29	0.46	0.69	1.14	1.71	2.29	2.86	3.86	5.14	8	11.43	17.14	22.86	28.57	34.29	37.14
	7.2Ir	0.2	0.31	0.47	0.79	1.18	1.57	1.97	2.66	3.58	5.51	7.87	11.8	15.74	19.67	23.6	25.57
EI(M)Express inverse time(Motor protection)	1.5Ir	6.22	9.96	14.93	24.89	37.34	49.78	62.23	84.01	112.01	174.24	248.91	373.37	497.82	622.28	746.73	208.96
	2Ir	2.95	4.72	7.07	11.79	17.69	23.58	29.48	39.79	53.06	82.53	117.9	176.86	235.81	294.76	353.71	383.19
	6Ir	0.28	0.45	0.68	1.13	1.69	2.26	2.82	3.81	5.08	7.9	11.29	16.94	22.58	28.23	33.88	36.7
	7.2Ir	0.2	0.31	0.47	0.78	1.17	1.56	1.95	2.63	3.51	5.46	7.8	11.7	15.61	19.51	23.41	25.56
HV High voltage fuse compatible	1.5Ir	2.46	3.94	5.91	9.85	14.77	19.69	24.62	33.23	44.31	68.92	98.46	147.69	196.92	246.15	295.38	320
	2Ir	0.67	1.07	1.6	2.67	4	5.33	6.67	9	12	18.67	26.67	40	53.33	66.67	80	86.67
	6Ir	0.01	0.01	0.02	0.03	0.05	0.06	0.08	0.1	0.14	0.22	0.31	0.46	0.62	0.77	0.93	1
	7.2Ir	0	0.01	0.01	0.01	0.02	0.03	0.04	0.05	0.07	0.1	0.15	0.22	0.3	0.37	0.45	0.48
I²T Universal inverse time protection	1.5Ir	15	30	60	120	240	360	480	600	720	840	960
	2Ir	8.44	16.88	33.75	67.5	135	202.5	270	337.5	405	472.5	540
	6Ir	0.94	1.88	3.75	7.5	15	22.5	30	37.5	45	52.5	60
	7.2Ir	0.65	1.3	2.6	5.21	10.42	15.63	20.83	26.04	31.25	36.46	41.67

Note: Intelligent controller long delay protection feature factory default is I²T universal inverse time protection: I2TL=(1.5Ir) 2t, tL-long delay 1.5Ir setting time,TL- Long delay action time, Operation time error ±15%.

Circuit Breaker Control Circuit Wiring Diagram

RDW8HU-2500/4000/6300 R-type secondary circuit wiring diagram terminal function and symbol interpretation

Terminal number	Function Description	Symbol	Paraphrase	Remark
1、2	Auxiliary power input: AC230V, AC400V, DC220V, DC110V	RDW8HU	RDW8HU universal circuit breaker
3、4、5	Fault trip auxiliary contact, contact capacity: AC250V, 3A	S1~S4	Signal lamp	User provided
20	Ground (PE)	TA	Current transformer
21、22、23、24	Voltage signal measurement, 21 is connected to phase N, 22 is connected to phase A, 23 is connected to phase B, 24 is connected to phase C	SAL	microswitch
27、28	Undervoltage release	SB1	Opening button	User provided
29、30	Shunt release	SB2	Closing button	User provided
31、32	Closing electromagnet	X	Closing electromagnet
33、34、35	Electric operating mechanism (electric energy storage), 37 connected with green line, 38 connected with black line, 39 connected with red line	F	Shunt release
36~48	Auxiliary contact terminal	Q	Undervoltage release
★Since the main circuit voltage of this series is high voltage, the voltage signal measurement of R/H type controller 21,22/23,24 needs to be connected to the voltage conversion module.		M	Electric operating mechanism
		SA	Electric operating mechanism travel switch
		Fu	fuse	User provided
		PE	Ground wire
		N	Neutral (N phase)
		A、B、C	Phase line
		AX	Auxiliary contact

RDW8HU-2500/4000/6300 H-type secondary circuit wiring diagram terminal function and symbol interpretation

Terminal number	Function Description	Symbol	Paraphrase	Remark
1、2	Auxiliary power input: AC230V, AC400V, DC220V, DC110V	RDW8HU	RDW8HU universal circuit breaker
3、4、5	Fault trip auxiliary contact, contact capacity: AC250V, 3A	S1~S4	Signal lamp	User provided
10、11	Communication interface output, 10 is (+),11 is (-) (Note: Default Modbus-RTU communication mode)	TA	Current transformer
12～15	DO1, programmable signal output, contact capacity: AC250V, 3A	SAL	Microswitch
14、15	DO2DO3, opening signal output, contact capacity: AC250V, 3A	SB1	Opening button	User provided
16、17	DO4, closing signal output, contact capacity: AC250V, 3A	SB2	Closing button	User provided
18、19	Ground (PE)	X	Closing electromagnet
20	Voltage signal measurement, 21 is connected to phase N, 22 is connected to phase A, 23 is connected to phase B, 24 is connected to phase C	F	Shunt release
21、22、23、24	External N transformer input	Q	Undervoltage release
25、26	Undervoltage release	M	Electric operating mechanism
27、28	Shunt release	SA	Electric operating mechanism travel switch
29、30	Closing electromagnet	Fu	fuse	User provided
31、32	Electric operating mechanism (electric energy storage), 37 connected with green line, 38 connected with black line, 39 connected with red line	PE	Ground wire
33、34、35	Auxiliary contact terminal	N	Neutral (N phase)
36～48		A、B、C	Phase line
★Since the main circuit voltage of this series is high voltage, the voltage signal measurement of R/H type controller 21,22/23,24 needs to be connected to the voltage conversion module.		AX	Auxiliary contact	Selective assembly
		ST-DP module	This parameter is required when the communication mode is Profibus-DP	Selective assembly
		ST Power module	Communication function when needed	Selective assembly
		ST201 Relay module	Communication function when needed