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Single Phase Surge Protective Device
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Product: Views:357Single Phase Surge Protective Device 
Unit price: Negotiable
Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2019-04-21 04:48

Main Features

★ limp: 15KA on 10/350 µs current impulse

★ with a remote communication interface, enabling remote monitoring

★ 35mm electrical din rail mounted

Technical parameter

Single Phase Surge Protective Device

The signal line SPD is actually a signal lightning arrester installed in the signal transmission line, generally at the front end of the device, to protect subsequent devices and prevent lightning waves from influencing the damaged device from the signal line.

1) Selection of voltage protection level (Up)

The Up value should not exceed the rated voltage rating of the protected equipment. Up requires that the SPD be well matched to the insulation of the equipment being protected.

In the low-voltage power supply and distribution system, the equipment should have a certain ability to withstand surge, that is, the ability to withstand shock and overvoltage. When the impact overvoltage value of various equipment of 220/380V three-phase system cannot be obtained, it can be selected according to the given indicators of IEC 60664-1.

2) Selection of the nominal discharge current In (impact flow capacity)

The peak current flowing through the SPD, 8/20 μs current wave. It is used for the Class II classification test of SPD and also for the pretreatment of SPD for Class I and Class II classification tests.

In fact, In is the maximum peak value of the surge current that can pass the specified number of times (usually 20 times) and the specified waveform (8/20 μs) without substantial damage to the SPD.

3) Selection of maximum discharge current Imax (limit shock flow capacity)

The peak current flowing through the SPD, 8/20 μs current wave, is used for the Class II classification test. Imax has many similarities with In, which use a peak current of 8/20 μs current wave to perform a Class II classification test on SPD. The difference is also obvious. Imax only performs an impact test on SPD, and SPD does not cause substantial damage after the test, and In can do 20 such tests, and SPD cannot be substantially destroyed after the test. Therefore, Imax is the current limit of the impact, so the maximum discharge current is also called the ultimate impulse flow capacity. Obviously, Imax>In.


Q1: Can I get some samples?

A: Yes, Sample orders welcomed.

Q2: Can I use my own Logo or design on goods?

A: Yes, Customized logo and design on mass production are available.

Q3: What is the delivery time?

A: 3 days for samples, 7-15 days for mass production.

Q4: What is the payment term?

A: T/T, L/C at sight, West Union, Paypal, etc.

Q5: May I visit your factory?

A: Sure, welcome any time. We can also pick you up at the airport or station.