How to use SMG2000B digital double-clamp phase volt-ampere meter
2022-09-28 14:04:29
1. How to measure phase sequence of three-phase voltage with SMG2000B digital double-clamp phase volt-ampere meter?
UAB (or UAO) voltage is input from U1 terminal, UBC (or UBO) voltage is input from U2 terminal, measure its phase angle φ, if φ=120°, it is positive phase sequence; if φ=240°, it is negative. Phase sequence. Two calipers can also be used to measure the phase sequence of their three-phase currents.
2. How to use the SMG2000B digital double clamp phase volt-ampere meter to determine the inductive circuit and capacitive circuit?
The voltage of the circuit under test is input from the U1 terminal. The current is input through the caliper from the I2 jack and the phase is measured. If the measured phase φ1 is less than 90°, the circuit is inductive; if the measured phase is greater than 270°, the circuit is capacitive.
The current of the circuit under test is input through the caliper from the I1 jack, the voltage is input from the U2 terminal, and the phase is measured. If the measured phase φ2 is less than 90°, the circuit is capacitive; if the measured phase is greater than 270°, the circuit is Sensibility.
3, how to use SMG2000B digital double clamp phase volt-ampere meter for power factor measurement?
From 2 measured inductive circuit phase power factor angle φ1, capacitive circuit current leading voltage phase angle φ2 can calculate COSφ1, COSφ2 as the corresponding power factor value.
4. How to use SMG2000B digital double-clamp phase volt-ampere meter for power measurement?
The previously described method measures the voltage U, the current I and φ, calculates the power factor COSφ from φ, and then calculates the power according to the formula P=UIcosφ.
5, how to use SMG2000B digital double clamp phase volt-ampere meter to check the transformer wiring group?
Power transformers often use Y/YO-12, YO/△-11, Y/△-11 three wiring groups. When using Y/YO-12 connection method, UAB is in phase with Uab and its phase angle is 0° or 360°; when using Y/△-11 or YO/△-11 connection method, the phase angle between Uab and UAB is 30° is the Uab leading UAB phase 30° (the subscripts A and B indicate the high-voltage winding ends, a and b indicate the low-voltage winding ends, and 0 indicates that there is a neutral connection.)
6, how to use SMG2000B digital double-clamp phase volt-ampere meter three-phase winding connection method to distinguish?
Regardless of the three-phase winding or three-phase load of a three-phase alternator or the high and low voltage windings of a three-phase transformer, the connection method has a star (also called Y-shaped) connection and a triangular (also called △-shaped) connection method. When using a star-shaped (Y-shaped) connection, the measured phase angle between UAB and UA is 30° (UAB leads the UA phase angle); the phase angle between Uab and Ua is 30° (Uab leading Ua phase angle). When the three-phase load or the low-voltage winding of the three-phase transformer is connected with a triangle (Δ11 shape), Uab leads Ua and its phase angle is 60°.
7. How to use SMG2000B digital double-clamp phase volt-ampere meter to judge the correctness of wiring of three-phase two-element active power meter?
Taking into account the current in and out and phase sequence of the three-phase voltage, there are 48 combinations of seven input lines, of which only two of the 48 are correct. There are 46 types of errors (12 of which are non-transitory, and 10 are not allowed to pass. There are 12 kinds of reversals, and there are 12 kinds of reversals when the COSφ changes. Using this phase meter can easily read and measure the phase relationship and determine the two correct wiring. That is, the phase angles of UAB and IA are equal to φ1, and the phase angles of UCB and IC are equal to φ2 (the phase angle of the voltage leading current). If φ1-φ2=±300°, the wiring is correct.
8. How to use SMG2000B digital double-clamp phase volt-ampere meter to estimate the running speed of the power meter?
According to the formula: T=3600n/NP (seconds), the theoretical time T used when turning the n-turn of the meter is first calculated. In the formula: P—the load power (KW) of the watthour meter when measured; the constant of the N-wattage meter (turn/KWH), which is marked on the dial of the watt-hour meter, and then measured Using time t, comparing t and T can determine the speed of running the meter.
9. How to use SMG2000B digital double clamp phase volt-ampere meter to measure leakage current?
The phase meter has a very high current resolution and can be used as a leakage current meter.
i. For two-phase devices, when the device is not leaking electricity, the two-wire current is equal in magnitude and opposite in direction, and the sum of two-wire currents is zero. If two lines are passed through the jaws at the same time, the meter current shows zero. If there is leakage, the two-wire current will be different. In this case, the current in the phase meter is the leakage current.
Ii. For three-phase three-wire devices, when the device does not leak current, the sum of the three-phase line currents should be zero. If three lines are passed from the jaws, the phase meter current display should be zero; if there is leakage, the phase meter Current shows the number of leakage current.
Iii. For three-phase four-wire devices, when the device does not leak current, the sum of the four-wire currents is zero. If four lines are passed from the jaws, the phase meter current display should be zero; if there is leakage, the phase meter current The number of leakage current is shown.
UAB (or UAO) voltage is input from U1 terminal, UBC (or UBO) voltage is input from U2 terminal, measure its phase angle φ, if φ=120°, it is positive phase sequence; if φ=240°, it is negative. Phase sequence. Two calipers can also be used to measure the phase sequence of their three-phase currents.
2. How to use the SMG2000B digital double clamp phase volt-ampere meter to determine the inductive circuit and capacitive circuit?
The voltage of the circuit under test is input from the U1 terminal. The current is input through the caliper from the I2 jack and the phase is measured. If the measured phase φ1 is less than 90°, the circuit is inductive; if the measured phase is greater than 270°, the circuit is capacitive.
The current of the circuit under test is input through the caliper from the I1 jack, the voltage is input from the U2 terminal, and the phase is measured. If the measured phase φ2 is less than 90°, the circuit is capacitive; if the measured phase is greater than 270°, the circuit is Sensibility.
3, how to use SMG2000B digital double clamp phase volt-ampere meter for power factor measurement?
From 2 measured inductive circuit phase power factor angle φ1, capacitive circuit current leading voltage phase angle φ2 can calculate COSφ1, COSφ2 as the corresponding power factor value.
4. How to use SMG2000B digital double-clamp phase volt-ampere meter for power measurement?
The previously described method measures the voltage U, the current I and φ, calculates the power factor COSφ from φ, and then calculates the power according to the formula P=UIcosφ.
5, how to use SMG2000B digital double clamp phase volt-ampere meter to check the transformer wiring group?
Power transformers often use Y/YO-12, YO/△-11, Y/△-11 three wiring groups. When using Y/YO-12 connection method, UAB is in phase with Uab and its phase angle is 0° or 360°; when using Y/△-11 or YO/△-11 connection method, the phase angle between Uab and UAB is 30° is the Uab leading UAB phase 30° (the subscripts A and B indicate the high-voltage winding ends, a and b indicate the low-voltage winding ends, and 0 indicates that there is a neutral connection.)
6, how to use SMG2000B digital double-clamp phase volt-ampere meter three-phase winding connection method to distinguish?
Regardless of the three-phase winding or three-phase load of a three-phase alternator or the high and low voltage windings of a three-phase transformer, the connection method has a star (also called Y-shaped) connection and a triangular (also called △-shaped) connection method. When using a star-shaped (Y-shaped) connection, the measured phase angle between UAB and UA is 30° (UAB leads the UA phase angle); the phase angle between Uab and Ua is 30° (Uab leading Ua phase angle). When the three-phase load or the low-voltage winding of the three-phase transformer is connected with a triangle (Δ11 shape), Uab leads Ua and its phase angle is 60°.
7. How to use SMG2000B digital double-clamp phase volt-ampere meter to judge the correctness of wiring of three-phase two-element active power meter?
Taking into account the current in and out and phase sequence of the three-phase voltage, there are 48 combinations of seven input lines, of which only two of the 48 are correct. There are 46 types of errors (12 of which are non-transitory, and 10 are not allowed to pass. There are 12 kinds of reversals, and there are 12 kinds of reversals when the COSφ changes. Using this phase meter can easily read and measure the phase relationship and determine the two correct wiring. That is, the phase angles of UAB and IA are equal to φ1, and the phase angles of UCB and IC are equal to φ2 (the phase angle of the voltage leading current). If φ1-φ2=±300°, the wiring is correct.
8. How to use SMG2000B digital double-clamp phase volt-ampere meter to estimate the running speed of the power meter?
According to the formula: T=3600n/NP (seconds), the theoretical time T used when turning the n-turn of the meter is first calculated. In the formula: P—the load power (KW) of the watthour meter when measured; the constant of the N-wattage meter (turn/KWH), which is marked on the dial of the watt-hour meter, and then measured Using time t, comparing t and T can determine the speed of running the meter.
9. How to use SMG2000B digital double clamp phase volt-ampere meter to measure leakage current?
The phase meter has a very high current resolution and can be used as a leakage current meter.
i. For two-phase devices, when the device is not leaking electricity, the two-wire current is equal in magnitude and opposite in direction, and the sum of two-wire currents is zero. If two lines are passed through the jaws at the same time, the meter current shows zero. If there is leakage, the two-wire current will be different. In this case, the current in the phase meter is the leakage current.
Ii. For three-phase three-wire devices, when the device does not leak current, the sum of the three-phase line currents should be zero. If three lines are passed from the jaws, the phase meter current display should be zero; if there is leakage, the phase meter Current shows the number of leakage current.
Iii. For three-phase four-wire devices, when the device does not leak current, the sum of the four-wire currents is zero. If four lines are passed from the jaws, the phase meter current display should be zero; if there is leakage, the phase meter current The number of leakage current is shown.
Mixer Faucet,Lab Mixer Faucet,Laboratory Mixer Faucet,Single Handle Mixer Faucet
NARWILL IMPORT&EXPORT CO.LTD , https://www.narwill.com