Introduction and Safety Use Specification of High and Low Voltage Clamped Ammeters
The high and low voltage clamp type ammeter breaks through the traditional structure and is specifically designed for online measurement of the leakage situation of high-voltage lines and judgment of the operation of zinc oxide lightning arresters. Adopting CT and shielding technology, it is composed of a dedicated high-voltage detector and a high-voltage insulation rod. It 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 no insulating rod is used, it can also be used as a high-precision low-voltage clamp leakage current meter or ammeter, which can accurately measure 0.01mA leakage current or current.
The high and low voltage clamp ammeter can be used as a ratio tester for high and low voltage current transformers and a zinc oxide lightning arrester tester. Measure the current of the primary and secondary circuits of the current transformer separately, and then calculate the transformation ratio or converted transformation ratio of the current transformer. Note: Since the leakage current of the lightning arrester after operation should be less than 500uA, the operation of the lightning arrester can be judged based on the leakage situation of the tested lightning arrester. If the measured leakage current of the lightning arrester is too large, exceeding 500uA, and if the system voltage is ruled out to be too high, the lightning arrester may have stains, dampness, or aging. The larger the leakage current, the more severe the stains, dampness, or aging.
The innovative integrated design of the clamp head and guide area of the high and low voltage clamp ammeter ensures high precision, high reliability, and high stability for continuous testing throughout the year. The insulating rod is lightweight and has the characteristics of moisture resistance, high temperature resistance, impact resistance, bending resistance, high insulation, and scalability.
This instrument is connected to an insulating rod and can be used for measuring leakage current of high-voltage lines below 60kV. Online current measurement can be used to determine whether the zinc oxide lightning arrester is damp or not operating properly. The instrument also has functions such as peak holding, data holding, data storage, wireless transmission, etc. Its dedicated high-voltage clamp can conveniently clamp or withdraw the tested wire by pressing or pulling the insulating rod, saving time and speed, Widely used in substations, power plants, industrial and mining enterprises, as well as detection stations and electrical maintenance departments for leakage detection and field electrical operations.
The high and low voltage clamp shaped ammeter is connected to an insulation rod, which can be used for current measurement of high-voltage lines below 23KV, online current measurement, and also has functions such as peak holding, data holding, data storage, wireless transmission, etc. Its dedicated clamp shaped ammeter can conveniently clamp or withdraw the tested wire by pressing or pulling the insulation rod, saving time and speed, Widely used in substations, power plants, industrial and mining enterprises, as well as testing stations, electrical maintenance departments for current detection and field electrical operations. It can also replace the high and low voltage ratio tester, which measures the high and low voltage currents of the primary and secondary circuits separately, and then calculates the high and low voltage ratio. The insulating rod is lightweight and has the characteristics of moisture resistance, high temperature resistance, impact resistance, bending resistance, high insulation, and scalability.
