YCW8G-DC DC Frame Isolation Switch

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YCW8G-DC DC Frame Isolation Switch

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YCW8G-DC DC Frame Isolation Switch

The YCW8G-DC DC frame isolation switch is suitable for DC systems with a rated operating voltage of DC1500V and below, and a rated current of 4000A and below. It is used for infrequent switching on and off of circuits, serving the purpose of isolating circuits.

Standards: IEC 60947-2

Product Details

Operating conditions

1. Ambient temperature: -40°C to +70°C, with a 24-hour average not exceeding +35°C.For temperatures above +40°C, derating is required. Refer to Appendix 1.

2. Atmospheric conditions: At an ambient temperature of +40°C, the relative humidity should not exceed 50%. Higher relative humidity is permissible at lower temperatures,e.g., at +25°C, the relative humidity can reach up to 90%. Condensation caused by temperature changes should be addressed with dehumidification or appropriate measures.

3. Corrosion resistance Grade: Salt mist level 2.

4. Pollution degree: Level 3.

5. Altitude: ≤2000m. For altitudes above 2000m, the isolating switch can be customized.

Refer to Appendix 2 .

6. Seismic resistance: Amplitude: 2–9Hz ±1.5mm, constant acceleration: 9–200Hz 5m/s². Excessive vibration may damage internal mechanical components of the operating mechanism, potentially affecting the reliable operation of the isolating switch.

7. Electromagnetic interference: Capable of withstanding overvoltage caused by electromagnetic interference, aging of the distribution system, or environmental disturbances,including radio waves, static discharge, etc.

8. Installation conditions: The vertical tilt should not exceed 5°. It should be installed in locations free of explosion hazards, conductive dust, and substances that could corrode metal or damage insulation.

9. Installation category: Installation category IV for the isolating switch’s main circuit; category III for the control circuit.

10.Protection rating: IP30; IP40 when installed in a cabinet compartment with an additional protective door frame.

Type designation

YCW8G -2500 DC /2630A F H DC1500
Product name	Shell frame	DC	Number of poles	Rated current	Installation type	Wiring method	Working voltage
YCW8G	2500	DC	2	630A	F	H	DC1500
YCW8G	2500 4000	DC	2:2P	630A 800A 1000A 1250A 1600A 2500A 2900A 3200A 3600A 4000A	F:Fixed type	H:Horizontal connection	DC1500

Technical data

Basic parameters	Unit	Data
Switch model		YCW8G-2500DC	YCW8G-4000DC
Conventional free air thermal current(lth)	A	2500	4000
Number of poles	P	2
Rated operational current (le)[A]	A	630,800,1000,1250,1600,2000,2500	2500,2900,3200,3600,4000
Rated operational voltage (Ue)[VDC]	VDC	1500	1500
Rated insulation voltage (Ui)[VDC]	VDC	1600	2000
Rated impulse withstand voltage (Uimp)[kV]	KV	12	12
Rated short-time withstand current (Icw)[kA]	KA	65KA/1s	100KA/1s,150KA/0.2s,
Rated short-circuit making capacity (Icm)[kA]	KA	65	100
Closing time	ms	≤70
Total breaking time	ms	≤40
Utilization category		DC-PV2,DC-22A,DC-23A
Mechanical life	times	10000
Electrical life	times	500
Overall dimensions (WDH)	mm	286302.5400	312302.5400

Wiring method

Overall and mounting dimensions

YCW8G-2500DC overall and mounting dimensions

YCW8G-4500DC overall and mounting dimensions

YCW8G-4000DC Isolation Switch overall and mounting dimensions

Appendix 1: Derating Factor Table

Current range	Ambient temperature	+40℃	+45°℃	+50℃	+60℃	+65°℃	+70℃
2500A	630A	1.0ln	1.0ln	1.0ln	1.0ln	1.0ln	1.0ln
	800A	1.0ln	1.0ln	1.0ln	1.0ln	1.0ln	1.0ln
	1250A	1.0ln	1.0ln	1.0ln	1.0ln	1.0ln	1.0ln
	1600A	1.0ln	1.0In	1.0ln	1.0ln	1.0ln	0.98In
	2000A	1.0ln	1.0ln	1.0ln	1.0ln	1.0ln	0.79ln
	2500A	1.0ln	0.95ln	0.89ln	0.85In	0.97In	0.63In
4000A	2500A	1.0ln	1.0In	1.0ln	1.0ln	0.78In	1.0ln
	2900A	1.0ln	1.0In	1.0In	1.0ln	1.0ln	0.86ln
	3200A	1.0ln	1.0In	1.0In	1.0In	0.97In	0.78In
	3600A	1.0ln	1.0In	0.98ln	094In	0.86ln	0.7In
	4000A	1.0ln	0.95ln	0.89In	0.85ln	0.78ln	0.63In

Appendix 2: Derating Factor Table

Current range	Altitude	2000m	3000m	4000m	5000m
Current range	Ambient temperature	3820V	3440V	2730V	2180V
1600A	630A	1.0ln	1.0ln	1.0ln	1.0ln
	800A	1.0ln	1.0ln	1.0In	1.0ln
	1250A	1.0ln	1.0ln	1.0ln	1.0ln
	1600A	1.0ln	0.93In	1.0ln	0.82In
2500A	1600A	1.0ln	1.0ln	0.88In	1.0ln
	2000A	1.0ln	1.0ln	1.0ln	1.0ln
	2500A	1.0ln	0.93In	0.88In	0.82In

Order specification table

User unit		Order quantity	Order date
Basic parameters	Frame current	□2500	□4000
	Rated current	□630 □800 □1000 01250 1600 □2000 □2500	□2500 □2900 □3200 □3600 □4000
	Instalation method	oFixed type
	Connection method	oHorizontal connection
Accessories	□ Undervoltage release	□AC220V □AC380V □DC110V □DC220V
		□Undervoltage instantaneous release □Undervoltage delay release 1s □3s □5s oVoltage loss delay release □1s □3s □5s
	□ Shunt release	□AC220V □AC380V □DC110V □DC220V
		oShunt release (instantaneous type)
		oShunt release (holding type)
	□ Closing electromagnet (instantaneous)	□AC220V □AC380V □DC110V □DC220V
	□ Electric operating mechanism	□AC220V □AC380V □DC110V □DC220V
	□ Key lock	□One lock,one key □Other
	□ Push-button lock
	□ Phase separator
Auxiliary switches	o Four sets of changeover (conventional)	□3NO3NC □4NO4NC □6NO6NC
Remarks