Product Description
Company Info
Product Description
LDB type surge protective device (short name "SPD") is suitable for AC 50/60 Hz, 380V and the following electric power systems, such as TT, IT, TN-S, TN-C, TN-C-S. It protects the electric network shocked by the thunder or over voltage.
Working condition:
1. Height: Not more than 2000m
2. Operating temperature: Normal -5~40? C Enlarge range: -40~70? C
3. Relative humidity: On condition that room temperature 30%~90%
4. Installed at no notability shocked and virated place
5. Don't be contained in explosion medium, the medium such as air and dust (including conduction dust ) shouldn't come to the degree that can corrode metal or damage insulation.
Tripping device
There's tripping device designed on the modular of the protector. When the protector is over heat or shocked, the tripping device can automatically separate it from the electric net, at the same time showing the indication signal. It's green when the protector is normal, red when tripping.
Alarm
The power of the alarm is supplied by AC220V. In normal condition it is green and the opening contact is closed but the closing contact is open. It is with the function of alarming and showing: The alarm will sound and the green indicator lamp will change to red when the mould of the protective device is out of working. And the alarm will not stop until the operator pushes the stop press (but the red lamp is still showing). If the trouble can not be dealt within 24 hours, the alarm will sound again.
Remote signaling contact
The products can be produced available with the accessory of remote signaling contact. If one or more of modular of the protector is in malfuction, the contact will be closed, and sending the malfunction signal.
Principal parameters
Maximum continuous operating voltage: Uc 140 275 320 385 420 550 V~
Test grade: II
Voltage protect levelUp≤ 0.8 1.2 1.5 1.8 2.0 2.5kV
Maximum discharge current: (8/20μS) Imax 10 40 60 80kV
Nominal discharge currrent: (8/20μS) In 5 15 20 30 40kA
Main Structure and Operating Principle
In three-phase four- line system, three phase lines and one zero line are connected protective device to the earth cable. (figure 1 ). In normal situation, the protective device is high resistance, when the over voltage brings for electric network shocked by thunder or other reasons, the protective device will rapidly transmit in ns, then lead the voltage into earth and protect the electric equipment. As the surge voltage through the protective device and after disappear it will recover to high resistance and not influence the normal operating. Pls refer to Fig. 2 for the electric principal for the protector.
Working condition:
1. Height: Not more than 2000m
2. Operating temperature: Normal -5~40? C Enlarge range: -40~70? C
3. Relative humidity: On condition that room temperature 30%~90%
4. Installed at no notability shocked and virated place
5. Don't be contained in explosion medium, the medium such as air and dust (including conduction dust ) shouldn't come to the degree that can corrode metal or damage insulation.
Tripping device
There's tripping device designed on the modular of the protector. When the protector is over heat or shocked, the tripping device can automatically separate it from the electric net, at the same time showing the indication signal. It's green when the protector is normal, red when tripping.
Alarm
The power of the alarm is supplied by AC220V. In normal condition it is green and the opening contact is closed but the closing contact is open. It is with the function of alarming and showing: The alarm will sound and the green indicator lamp will change to red when the mould of the protective device is out of working. And the alarm will not stop until the operator pushes the stop press (but the red lamp is still showing). If the trouble can not be dealt within 24 hours, the alarm will sound again.
Remote signaling contact
The products can be produced available with the accessory of remote signaling contact. If one or more of modular of the protector is in malfuction, the contact will be closed, and sending the malfunction signal.
Principal parameters
Maximum continuous operating voltage: Uc 140 275 320 385 420 550 V~
Test grade: II
Voltage protect levelUp≤ 0.8 1.2 1.5 1.8 2.0 2.5kV
Maximum discharge current: (8/20μS) Imax 10 40 60 80kV
Nominal discharge currrent: (8/20μS) In 5 15 20 30 40kA
Main Structure and Operating Principle
In three-phase four- line system, three phase lines and one zero line are connected protective device to the earth cable. (figure 1 ). In normal situation, the protective device is high resistance, when the over voltage brings for electric network shocked by thunder or other reasons, the protective device will rapidly transmit in ns, then lead the voltage into earth and protect the electric equipment. As the surge voltage through the protective device and after disappear it will recover to high resistance and not influence the normal operating. Pls refer to Fig. 2 for the electric principal for the protector.
Address:
Sulv Industrial Zone, Yueqing, Wenzhou, Zhejiang, 325604 China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Consumer Electronics, Electrical & Electronics, Industrial Equipment & Components
Company Introduction:
YUEQING SUPOWER ELECTRIC Co., Ltd. is the specialized manufacturer and exporter in line of Solar Power System accessories, Industrial Control Solution and Electrical Accessories Supplies. We nearly have More than 10 years manufacture and export experience in electrical field, with the improvement of technology and quality of products and our service won high reputation from our customers who comes around the world.
"SUPOWER ELECTRIC" products are including Solar Power System accessories, Circuit Protection product, Electric control equipment, Electrical accessories, Distrubtion board and Hardare tools. Such as Solar on grid micro Inverter, Pure Sine wave power Inverter, Solar Charger Controller, Battery Charger, MCB, RCCB, RCBO, Time Switches, Pushbutton Switches, Cam switches, LED Indicator, LED Bulbs, AC Contactor, Relays, Digital Meters, Metal Encolsure, Temperature Controller, Cable gland, cable tile, cable marker, crimp tool plier tool and so on, all are strict to according to international standard to produce. We always strive to reduce the cost, improve the quality, minimizing environment impact, make our customers more competitive. Taking our mission that the growth our customer will. We will.
"SUPOWER ELECTRIC" products are including Solar Power System accessories, Circuit Protection product, Electric control equipment, Electrical accessories, Distrubtion board and Hardare tools. Such as Solar on grid micro Inverter, Pure Sine wave power Inverter, Solar Charger Controller, Battery Charger, MCB, RCCB, RCBO, Time Switches, Pushbutton Switches, Cam switches, LED Indicator, LED Bulbs, AC Contactor, Relays, Digital Meters, Metal Encolsure, Temperature Controller, Cable gland, cable tile, cable marker, crimp tool plier tool and so on, all are strict to according to international standard to produce. We always strive to reduce the cost, improve the quality, minimizing environment impact, make our customers more competitive. Taking our mission that the growth our customer will. We will.
