DT1 (JSY) series statistical voltage monitoring (timing) instrument

Shunyang brand DT1 (JSY) series statistical voltage monitoring (timing) instrument is developed by our company in accordance with the electric power industry standard DL500-92 "Technical Conditions for Ordering Voltage Monitors" and DL/566-95 "Technical Conditions for Voltage Loss Timers" It is a special instrument suitable for power system monitoring, power grid voltage quality assessment, and three-phase AC voltage loop loss, timing, counting and alarming.

The main technical parameters:

1. Basic parameters

1.1 Rated current value 1A, 5A

1.2. Reference voltage value 57.5V, 100V, 220V, 380V

2. Basic functions

2.1 Press the button to display the instantaneous voltage value of each phase (channel), the time when the maximum, minimum and maximum (small) value of voltage of the current day, current month, last day and last month appear, average value, qualified rate and qualified time, over-limit rate And over-upper limit time, over-lower limit rate and over-lower limit time, statistical time and corresponding phase loss times and current time (year, month, day, hour, minute, and second).

2.2 At the full day and month, the statistical data will be automatically stored in the storage unit of the previous day and the previous month, and the initialization work will be completed at the same time, and the statistics of the new day and January will be started.

2.3 Press the button to read the all-day voltage statistics of any day in the previous 31 days of each phase (channel) [Voltage qualification rate and qualified time, over-upper limit rate and over-upper limit time, over-lower limit rate and over-lower limit time, statistical time, average Value, maximum value, maximum value (year, month, day, hour, minute, second), minimum value, minimum value (year, month, day, hour, second)

2.4 Press the button to read the voltage value of any hour on any day of the 31 days before each phase (channel).

2.5 When any phase of A, B, and C loses voltage (ie, the read value is less than 78% of the rated value), the corresponding phase loss indicator will flash, and the number of corresponding phase loss times will increase by 1 to cause a loss of voltage alarm The relay is closed so that the external buzzer will alarm; at the same time, it will start the depressurization timer, and the timer value will increase by 1 min every 60s.

2.6 When any phase of A, B, and C does not lose pressure (that is, the read value is greater than or equal to 85% of the rated value), the corresponding phase loss indicator will stop flashing (that is, go out), and no longer lose pressure timer; When the three phases do not lose voltage, the loss of voltage alarm relay will no longer alarm when released.

2.7 Through data communication, the PC can read the full-day voltage statistics of each phase (channel) on each day of the month, and the hourly voltage value of each day; read out quarterly statistical reports.

2.8 The upper and lower warning limits can be set individually, and the buzzer can control and alarm when the instantaneous value exceeds the upper and lower warning limits.

2.9 It has a controllable buzzer alarm function when the instantaneous value exceeds the limit.

2.10 It has a controllable buzzer alarm function for any phase loss.

2.11 Press the button to read the minutes corresponding to the phase loss time.

2.12 If the average value of the measured voltage in the last 1 minute exceeds the limit, the corresponding phase (road) lamp and the upper limit rate lamp (or the lower limit rate lamp) will flash and indicate.

3. Main technical indicators

3.1 Measuring range: -90%Un～+20.5%Un (Un is the rated value of the measured voltage, when the measured voltage is less than 0.75Un, it will not be unified
Meter, for display reference only)

3.2 Comprehensive measurement error (within the range of Un±20%): ≤0.5%

3.3 Sensitivity: K≤0.5%

3.3 Sensitivity: K≤0.5%

3.4 Clock error: ≤1s/24h

3.5 Statistical accuracy: 0.02%

3.6 Timing accuracy: under reference conditions, the timing error of the voltage monitoring (timer) instrument is 1min/30d

3.7 Power circuit power consumption: ≤3VA

3.8 Data memory capacity: 32K, using ferroelectric memory (FRAM).

3.9 Saving time of power failure data:> 10a

3.10 Loss of voltage starting voltage: 78% ± 2V of the rated voltage, that is, the reference voltage

3.11 Loss of voltage return voltage: 85% ± 2V of the rated voltage, that is, the reference voltage

3.12 Pressure-loss timing mode: phase-accumulated timing with min as the unit, timing capacity: 999999min (approximately equal to 16666h).

3.13 Statistics of the number of times of loss of pressure: counted times by phase accumulation, counting capacity: 65535 times each of the current day, last day, current month, and last month.

3.14 size:

Slot-mounted type: 160×236×80mm3, corresponding installation hole size: 150+1×70+1mm2
Hanging type: 260×150×98mm3
Portable: 220×230×93mm3

3.15 Weight

Slot-mounted type: 1.4kg
Hanging type: 2.1kg
Portable: 1.4kg

3.16 Monitoring circuit: three-phase (three-way)