Introduction to high and low voltage clamp ammeter
The high-voltage and low-voltage clamp ammeter breaks through the traditional structure, and is specially designed for online measurement of leakage of high-voltage lines and judgment of the operation of zinc oxide arresters. Using CT and shielding technology, it is composed of a special high-voltage detector and a high-voltage insulating rod, wirelessly transmits test data, and is equipped with a wireless receiver, which can receive the measured data within 30 meters in a straight line. If the insulating rod is not used, it can also be used as a high-precision low-voltage clamp leakage current meter and ammeter, which can accurately measure the leakage current or current of 0.01mA.
The high and low voltage clamp ammeter can be used as a high and low voltage current transformer transformation ratio tester and a zinc oxide arrester tester. That is to measure the current of the primary and secondary circuits of the current transformer respectively, and then calculate the transformation ratio or converted transformation ratio of the current transformer. Note: Since the leakage current of the arrester after it is put into operation should be less than 500uA, the operation of the arrester can be judged according to the leakage current of the arrester. Stained or damp or aging, the greater the leakage current, the more serious the stain or damp or aging.
The innovative integrated design of the clamp head of the high and low voltage clamp ammeter and the guide area ensures the high precision, high reliability and high stability of the uninterrupted test all the year round. The insulating rod is light, and has the characteristics of moisture resistance, high temperature resistance, impact resistance, bending resistance, high insulation, and scalability.
The instrument is connected with an insulating rod and can be used for leakage current measurement of high-voltage lines below 60kV, online current measurement, and judging whether the zinc oxide arrester is damp or in poor operation. The instrument also has functions such as peak hold, data hold, data storage, and wireless transmission. High-voltage pliers can easily clamp or evacuate the tested wire by pressing or pulling back the insulating rod, which saves time and is quick. It is widely used in substations, power plants, industrial and mining enterprises, testing stations, electrical maintenance departments for leakage detection and field electrical work.
The high and low voltage clamp ammeter is connected to the insulating rod, which can be used for current measurement of high voltage line below 23KV, online current measurement, and also has functions such as peak hold, data hold, data storage, wireless transmission, etc. The special clamp ammeter can be used to press or withdraw the insulation The rod can be used for clamping or evacuating the measured wires conveniently, saving time and quickly. It is widely used in substations, power plants, industrial and mining enterprises, testing stations, electrical maintenance departments for current detection and field electrical work. It can also replace the high and low voltage transformation ratio tester, that is, measure the high and low voltage currents of the primary circuit and the secondary circuit respectively, and then calculate the high and low voltage transformation ratio. The insulating rod is light, and has the characteristics of moisture resistance, high temperature resistance, impact resistance, bending resistance, high insulation, and scalability.
