Power surge protector

Wenzhou POJAL Electric Co.,Ltd.PJD1-Bseriessurge protector is suitable for TN-S, TN-C-S, TT, IT etc. power supply system of AC 50/60Hz, 380V, and used at the equipotential connection of LPZ0A or LPZ0B and LPZ1 zone, which protects the electric network not shocked by the thunder and lightning. It's designed according to GB18802.1, IEC61643-1, adopts 35mm standard rail, there is a failure release mounted on the module of SPD, when the SPD fails in breakdown for over-heat and over-current, the failure release will help electric device separate from the power system and give the indication signal, green means normal, red means abnormal. 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 signalling contact The products can be produced available with the accessory of remote signalling contact which is an opening contact. If one of the product's mould is out of working, the contact will be closed and send the trouble information. The rated data of the remote signaling contact is AC36V, 1A. The 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. Figure 2 is the electric principle about it. Installation: It adopts 35 mm DIN rail It is linked by 2.5 -- 35 mm copper wire, and there are 2 wiring methods: 1. From power switch to protective device , then from protective device again to the load end. This way suits to the distribution case which load current is under 100 A. The wire section should be selected by the load current. (Figure 3) 2. From the power switch to protective device, also from the power switch to load end. This way suits to the distribution case which load current is over 100 A. The wire section should not be selected by the load current, but it can't be longer than 500 mm.(Figure 4) The earth cable should choose the double color wire which is over 4 mm; but not longer than 500 mm. In order to guarantee electrical network's normal operating after protective device losing efficiency, the protective device which linked to the phase line must be connected a 32A fuse box. Adjustment, operation, maintenance 1. There's no need to adjust the protector after installation. 2. The protector can automatically protect the electric net should it's installed rightly. 3. When operating, check whether the modular scutcheon is red, at the same time check whether the indication red light is lighting, then can change the malfunction device.