3.5U chassis AC/DC peak voltage meter

pv 2-1Multi functional digital communication/Operation Manual for DC Peak Voltage Meter

PV2-1Digital multifunctional communication/The DC peak voltage meter adopts the standard19Inch plug-in box and3.5UThe compact profile box has two structural designs, with multiple functions such as automatic AC/DC resolution, signal measurement, breakdown peak holding, and fast protection for high-voltage crossing lines, with an accuracy of0.2Grade.

This instrument adoptsDSPThe computing core and digital signal processing technology, through real-time signal waveform analysis and amplitude frequency calculation, can accurately determine the breakdown point, maintain the highest voltage value at the breakdown time, and immediately protect. At the same time, the relay switch provides the user with a control signal accompanied by an audible alarm system. Advanced resistance has been adopted in the design aspectEMCDesign to ensure long-term reliable operation of this product in various high electric and magnetic field environments, with comparable technology among similar products both domestically and internationally. And it has a bilingual display interface. The operation interface in Chinese mode is intuitive and easy to understand, concise and clear. Users can easily operate without a manual. The operation character prompt interface in English mode is as follows

table1LCD prompt instructions (in English mode)

Usage steps:

1Before starting up, plug the voltage divider signal cable into the signal input matching interface on the back panel of the instrument. Pay attention to the ground potential of the signal and the connection between the casing, which should be reliably connected to the ground.

2After connecting the power, press the power button to turn on the device’power supplyPOWER’Press the button, the instrument starts working and is in measurement mode. At this time, if there is no signal added to the input terminal, the instrument display panel may have a certain value, which is the interference value in the electric field and can be ignored. Once the input terminal adds a value greater than0.02VAfter receiving the signal, it enters normal measurement mode.

3After startup, the peak meter will automatically recognize the type of input signal, and the default state is AC mode. If the input signal is an AC signal, it defaults to the peak value/√2Measure the status, press the 【 Effective Value 】 button/Peak value: After the white light is turned on, if this button is continuously pressed at this time, the peak value can be reached（PEAK/√2）Effective value（RMS）True peak value（PEAK）,FrequencyFREQ）FourSwitching between measurement functions in a loop, if the input signal is a DC signal, it will be the DC peak value(PEAK)And the average value（AVR）Switching between measurements.

4: Press【K1/K2/Pressure holding button, combined with【<】Left shift 【>】右移、【+】Increase【-】Reduce, this4Set the wind pressure ratio and high voltage protection limit of the AC/DC voltage divider using a single button,K1To communicate the voltage division ratio,K2For the DC voltage divider ratio,OVER VOLTAGE SETAfter setting the voltage value for the high-voltage protection action that needs to be set (the overvoltage protection mode is always on), press the 【 Confirm 】 button to indicate that the setting is complete, and the instrument will automatically save the set voltage division ratio.

After setting the overvoltage protection limit to a certain voltage value, when the high voltage measured by the peak meter exceeds this set value, the normally open terminal of the peak meter overvoltage protection relay will become normally closed, providing the user with the trigger signal required for related voltage relief or holding actions. When using this port, users should note that the capacity of this relay port is not large and can only be used as a trigger signal.

5、[Keep it open]The key. Press this key repeatedly with the cursor<>inONorOFFUp switch represents the setting of the breakdown time peak holding on and off, press the confirm button to set the input. After entering the activation mode, it is necessary to input the activation range of the breakdown hold function, such as setting10KVAfterwards, the peak meter measures higher than the voltage peak value10KVAfterwards, if there is a breakdown, the device will activate the breakdown hold function. If the breakdown occurs below the set value, it will not be held. The setting range is0.00to99999.99KVBefore leaving the factory, it is set to99999.99KVUsers can set according to their actual usage situation to avoid mistaking the sample for breakdown due to unstable high-voltage signals or sudden changes in transformer output

6When in the measurement state, if the test sample breaks down, the instrument immediately alarms and freezes the peak voltage at the time of breakdown, as shown in the following figure. The breakdown voltage isXX. XXKVAccurately maintaining the display of the other shore. This value can be viewed at any time and will be saved until the next breakdown time, when it will be automatically overwritten by the new breakdown value. Only the current breakdown peak value will be displayed each time. Automatically clear after shutdown.

If the current measured state is peakPERKOr effective valueRMSThe value maintained by breakdown is also related to its stateconsistent.

7:Reproduction of breakdown value. After high-voltage breakdown occurs, the peak meter automatically records the last measured value of breakdown and displays it on the screen. When the user switches to the measurement state, in any state, press[Breakdown value]Press the button to retrieve the measurement value of the last breakdown hold.

8Relay protection function. Includes two sets of relay protection interfaces; The breakdown maintains the relay protection interface and overvoltage protection relay protection interface.

a)When breakdown occurs, the relay protection interface will change from normally open to normally closed for a certain duration3Recovered in seconds. Accompanied by an alarm sound. The maximum capacity of this interface is250V/0.1AIt can be controlled by external high-power relays to quickly divide and cut off the power supply of high-voltage transformers in the event of high-voltage breakdown, in order to protect high-voltage equipment.

b)When the measured high voltage value exceeds the set high voltage protection action voltage value, the output interface of the overvoltage protection relay will change from normally open to normally closed until the high voltage drops to the set value95%Below, the alarm relay has been restored. This function can be flexibly applied by users, which can achieve both voltage maintenance and stabilization. When using, the input overvoltage limit should be higher than the breakdown peak value set limit.

Attention: The relay interfaces provided by the instrument are all signal relay interfaces, with a maximum capacity of250V/0.1AWhen using, do not exceed the capacity. When using, be sure to use it in conjunction with an external power relay. This relay is only used as a signal contact function.

9During the measurement process, any button function can be accessed and used at any time without affecting the normal operation of the instrument measurement.

table2 PV2-1Basic electrical parameters of the model

Notes:

1The input signal cannot exceed the specified measurement range（AC/DC0600V）.

2:The current and voltage applied to the relay output interface cannot exceed the specified range (less than)250V/1A）

3Avoid pressing the button forcefully

4The instrument belongs to high-precision measuring equipment. Please keep and use it properly. If there is a malfunction, please return it to the factory for repair. Do not repair it privately.