Signal SPD

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US$ 100

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Supplier Info.

Company Name Shanghai Chenzhu Instrument Co., Ltd.
Membership Free member
Registration Date2021.06.04
Country/RegionChina
CityShanghai
Contact Danping Li(Ms.)

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Product Attributes

- Place of Origin China
- Supply Type OEM Service
- Condition New
- Related Keywords Signal SPD

Description by Manufacturer

Electronic devices are always threatened by power surges and transients caused by power failures or nearby lightning strikes.

Signal SPD surge protection device is born to protect electronic devices in automatic control systems.

The SPD surge protection device can provide surge protection for field equipments such as sensors, transmitters, flow meters, solenoid valves, thermocouples, thermal resistance, devices with RS485 or RS232 interface and for I/O interfaces such as Al, AO, Dl, DO, Tl, Pl in PLC, DCS, FGS, ESD control systems.

Signal data surge protector is widely used in petrochemical, gas, environmental protection and new energy industries.

Chenzhu also provides signal arrester equipment in intrinsical safety circuits that meet the same design and structural standards as intrinsic safety equipment, which requires certification and approval of them.

Intrinsic Safety 5V Signal SPD

Intrinsic Safety 24V Signal SPD

Signal SPD For 5V

Signal SPD For 24V

FAQ of Signal SPD

How do I choose a signal SPD?-

CHENZHU SPD for signal is mounted by DIN rail. It can be selected from informations below.

1. Type of the signal

According to the signal type, we can get the information of the signal voltage, so as to determine Uc.

For example, normally,

AI，AO： 24V，

DI，DO： 24V，

RS485， TC：5V，

RS232：12V

RTD：5V.

2. Rated current IL

Since SPD for signal is normally installed in range, operating current will go through SPD. If operating current is bigger than IL of SPD, SPD will be damaged. Normally IL will be big enough. For 3-wire, 4-wire carrier current transmitters and DO signals which have higher power consumption, IL need to be checked.

3. Number of wires to be protected

Select 2 wires, 3 wires, 4 wires accordingly.

4. Is intrinsically safe explosion-proof required?

Yes——select intrinsically safe SPD;

No——select non intrinsic safety SPD.

How to judge if SPD is functional?-

SPD protected the devices by discharging current to the ground. One-time strike will not damage SPD unless SPD is chosen incorrectly.

Power supply SPD is equipped with disconnector. If SPD fails, it will indicate through the indication window. SPD disconnector will not trip when it discharges lightning current. It is used to avoid fire hazardous caused by continuous fault current flowing through SPD when SPD is degraded.

For signal SPD, the risk of fire is small, so it is not required to set a disconnector. Normally, special lightning protection testing devices need to be used for off-line tests. Nowadays, with the technology development, the status indication function of signal SPD is becoming popular, so it’s also possible to judge by status indication.

As a SPD supplier, we can offer kinds of related products for sale, if you have needs, please contact us.

Price

Price US$ 100 / Piece

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Company Profile

About Shanghai Chenzhu Instrument Co., Ltd.

Membership Free member
Registration Date2021.06.04
Country/RegionChina
CityShanghai
Contact Danping Li(Ms.)

SHANGHAI CHENZHU INSTRUMENT CO., LTD was established in 2002, which originated from Shanghai automation instrument institute, has grown as a leading brand providing high quality protective product for your important asset in both Process Automation and Factory Automation industry, specialized in isolated barriers, signal isolators, Surge Protective Devices and safety relays etc. integrating research and development, manufacturing and sales, providing OEM/ODM service and self-brand product. 2013, we launched the first One million pcs product and announced 5 years guarantee. Actually, we have 4 certifications which were the first one in instrumentation industry domestic China, such as IECEx Certificate, Europe ATEX Certificate by DNV, SIL from TUV Rheinland, and Japan TIIS Ex-proof Certificate. CHENZHU's factory has 2 SMT production line, over 4.5 million pcs products were sold from 2002 till end of 2019.

Selling Categories

- Measurement & Analysis Instruments >> Electrical Instruments

Keywords

signal surge protection device , signal spd , dc power surge protector

Registration Date	2021/06/04(Year/Month/Date)
Buyer / Seller in EC21	Seller
Business Type	Manufacturer
Year established	2002
Employees total	501 - 1000
Annual revenue	USD 500,001 - 1,000,000

Contact Information Order Credit Report

Company	Shanghai Chenzhu Instrument Co., Ltd.
Address	8F, Bldg.6, No. 201, Minyi Road, Songjiang Dis, Shanghai, ChinaShanghaiShanghai201612China
Phone	86 - 021 - 64513350
Homepage	http://www.chenzhuisolator.com
Contact	Danping Li

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