Live cable identification instrument operation method:
1. Make the cable under test uncharged, and find out the beginning and end of the cable;
2. Disconnect the ground wire (shielded wire) of the tested cable from the system ground wire;
3. The generator signal output terminal “-†is connected to the common ground, and the “+†output terminal is connected to the fault-free cable core in the cable under test, and the core terminal is grounded; the wiring method is shown in Figure 3 Show
4, select the signal output size file, the general election is small, when the detection signal is too weak, select large;
5, connected to the identification signal generator 220V power supply, the signal generator generates a modulated signal sent to the cable under test;
6, self-test: the caliper clamped in the signal generator "+" red output line, observe the detector head swing to "+", adjust the swing amplitude as large as possible.
7. Detect all the same type of cables one by one with a signal detector at the test site. When the head of the caliper signal detector indicates the maximum, and the direction is "+" (the direction in which the red mark on the caliper faces toward the instrument current) is the cable under test. The remaining cables oscillate in smaller amplitudes and in opposite directions.
Live cable identification instrument features:
a) The recognition accuracy is 100%.
b) The operation is simple and straightforward.
c) The instructions are clear and unambiguous.
d) The whole set of instruments is small and beautiful.
g) Suitable for various types of cables.
working principle:
The high power special signal transmitted by the transmitter HZ-201BF enters the selected cable, and the receiving clamp HZ-201BJ is clamped in the selected direction (the direction in which the caliper has a red marked face toward the instrument current) is selected On the cable, the direction of the current pulse sensed by the live cable identifier is indicated by the head HZ-201BZ pointer and the magnitude of the reflection is greater. For other nearby cables due to inductive or capacitive coupling, or due to the signal caused by the return current through the shield, the meter pointer will swing in the opposite direction at this time, and it can be seen that its strength is weaker than the correct cable current.
Cement Grinding Aid is a kind of chemical additives can improve cement grinding effect and performance, can significantly improve the cement production, every period cement strength, were to improve its liquidity.Cement grinding aid can greatly reduce the grinding ball phenomenon formed in the process of electrostatic adsorption package, and can reduce the grinding of ultrafine particles in the process of coalescence trend again.Cement grinding aid can significantly improve the liquidity of cement and improve the mill grinding effect and efficiency of classifier choose powder, so as to reduce the energy consumption of grinding.Using Grinding Agent in the production of cement with a low compaction trend of coalescence, which benefits the loading and unloading of cement, and can reduce the phenomenon of wall hanging cement silo.As a kind of chemical additives, grinding agent can improve the cement particle distribution and hydration, so as to improve the early strength cement and later strength.
Cement Grinding Aids,Grinding Agent,Cement Additives,Grinding Aid
NINGBO LUCKY CHEMICAL INDUSTRY CO. LTD , https://www.chinaluckychem.com