YCS8-S Photovoltaic DC Surge Protective Device

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YCS8-S Photovoltaic DC Surge Protective Device

General
YCS8-S series is applicable to photovoltaic power generation system. When surge overvoltage occurs in the system due to lightning stroke or other reasons, the protector immediately conducts in nanosecond time to introduce the surge overvoltage to the earth, thus protecting the electrical equipment on the grid.

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Product Details

Features

● T2/T1+T2 surge protection has two types of protection, which can can meet Class I (10/350 μS waveform) and Class II (8/20 μS waveform) SPD test, and voltage protection level Up ≤ 1.5kV;
● Modular, large-capacity SPD, maximum discharge current Imax=40kA;
● Pluggable module;
● Based on zinc oxide technology, it has no power frequency aftercurrent and fast response speed, up to 25ns;
● The green window indicates normal, and the red indicates a defect, and the module needs to be replaced;
● Dual thermal disconnection device provides more reliable protection;
● Remote signal contacts are optional;
● Its surge protection range can be from power system to terminal equipment;
● It is applicable to direct lightning protection and surge protection of DC systems such as PV combiner box and PV distribution cabinet.

Selection

YCS8	—	S	I+II	40	PV	2P	DC600	/
Model		Types	Test category	Maximum discharge current	Use category	Number of poles	Maximum continuous working voltage	Functions
Photovoltaic surge protective device		/: Standard type S: Upgraded type	I+II: T1+T2	40: 40KA	PV: Photovoltaic/ direct-current	2: 2P	DC600	/: Non communication R: Remote communication
						3: 3P	DC1000
						3: 3P	Dc1500 (Only type S)
			II: T2			2: 2P	DC600
						3: 3P	Dc1000
						3: 3P	Dc1500 (Only type S)

Technical data

Model		YCS8
Standard		IEC61643-31:2018; EN 50539-11:2013+A1:2014
Test category		T1+T2		T2
Number of poles		2P	3P	2P	3P
Maximum continuous working voltage Ucpv		600VDC	1000VDC	600VDC	1000VDC
Maximum discharge current Imax(kA)		40
Nominal discharge current In(kA)		20
Maximum impulse current limp(kA)		6.25		/
Voltage protection level Up(kV)		2.2	3.6	2.2	3.6
Response time tA(ns)		≤25
Remote and indication
Working status/fault indication		Green/red
Remote contacts		Optional
Remote terminal	AC	250V/0.5A
switching capability	DC	250VDC/0.1A/125VDC 0.2A/75VDC/0.5A
Remote terminal connection capability		1.5mm²
Installation and environment
Working temperature range		-40℃-+70℃
Allowable working humidity		5%…95%
Air pressure/altitude		80k Pa…106k Pa/-500m 2000m
Terminal torque		4.5Nm
Conductor cross section(maximum)		35mm²
Installation method		DIN35 standard din-rail
Protection degree		IP20
Shell material		Fire-proof level UL 94 V-0
Thermal protection		Yes

Note: 2P can be customized other voltage

Technical data

Model		YCS8-S
Standard		IEC61643-31:2018; EN 50539-11:2013+A1:2014
Test category		T1+T2			T2
Number of poles		2P	3P	3P	2P	3P	3P
Maximum continuous working voltage Ucpv		600VDC	1000VDC	1500VDC	600VDC	1000VDC	1500VDC
Maximum discharge current Imax(kA)		40
Nominal discharge current In(kA)		20
Maximum impulse current limp(kA)		6.25			/
Voltage protection level Up(kV)		2.2	3.6	5.6	2.2	3.6	5.6
Response time tA(ns)		≤25
Remote and indication
Working status/fault indication		Green/red
Remote contacts		Optional
Remote terminal	AC	250V/0.5A
switching capability	DC	250VDC/0.1A/125VDC 0.2A/75VDC/0.5A
Remote terminal connection capability		1.5mm²
Installation and environment
Working temperature range		-40℃-+70℃
Allowable working humidity		5%…95%
Air pressure/altitude		80k Pa…106k Pa/-500m 2000m
Terminal torque		4.5Nm
Conductor cross section(maximum)		35mm²
Installation method		DIN35 standard din-rail
Protection degree		IP20
Shell material		Fire-proof level UL 94 V-0
Thermal protection		Yes

Note: 2P can be customized other voltage

Failure Protection Device and Alarm Signaling Feature

Failure Protection Device
The surge protective device includes a built-in failure protection mechanism. In the event of overheating or malfunction, this mechanism automatically isolates the device from the power supply while providing a visible status indicator.
The status window displays green under normal operation and switches to red when a failure occurs.

Alarm Signaling Feature with Remote Contacts
The device can be configured with optional remote signaling contacts, offering both normally open and normally closed configurations. During normal operation, the normally closed contacts remain active. If any module of the device experiences a fault, the contacts will switch states—closing the normally open circuit and activating an alarm signal to notify of the issue.

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