DJL-V Type Voltage Loss and Flow Interruption TimerDetailed product description：

The DJL-V series voltage loss and current interruption timer is currently the most advanced monitoring instrument for voltage loss and current interruption. This product is carefully designed and manufactured according to the specific situation of power supply in China. It has the characteristics of complete functionality, reliable action, accurate timing, and strong anti-interference ability. The electronic components of this product are all made of micro power consumption CMOS integrated blocks. The intelligent monitoring circuit can accurately record the precise time of phase failure and voltage loss on the high and low voltage sides of the voltage transformer, and monitor CT disconnection at the same time. It provides an advanced instrument for unexpected situations of phase failure and voltage loss in electrical energy measurement and provides an essential verification basis for the occurrence of phase failure and voltage interruption in electrical energy measurement, achieving fair and reasonable accurate billing. Its various performance indicators meet or exceed the relevant standards of the "Technical Conditions for Voltage Loss Timing Instruments" issued by the Ministry of Electric Power Industry.

1、 Model and specifications of DJL-V type voltage loss and current interruption timer

model	Category	Rated voltage	Rated Current
DJL-V type	three-phase three-wire	3×100V	3×1A 3×5A
DJL-Y type	three-phase four-wire	3×220/380V 3×57.7V/100V	3×1A 3×5A

2、 Function and Features
1. The DJL-V series voltage loss and current interruption timer adopts the principle of voltage and current detection, and monitors the phase separation timing of the voltage transformer on the high or low voltage side of the measuring circuit due to phase loss. It can monitor the phase separation timing when the current transformer is open circuit.
The A, B, and C three-phase counters use a word wheel counter with strong anti-interference ability. Each phase counter has a reset switch, and pressing the electronic reset switch can reset the counter to zero.
3. The circuit adopts a fully isolated design to monitor the phase failure and voltage loss of the measuring circuit. In any case, even if the electronic part of the timer malfunctions due to certain reasons, it will not affect the safety and measurement accuracy of the measuring circuit.
4. The timer adopts a highly intelligent electronic circuit, which not only improves the function of voltage loss and interruption, but also has a small size, low power consumption, and long lifespan.
5. The timer adopts a large capacity backup battery, which can ensure reliable operation in the event of three-phase voltage interruption. The battery adopts an automatic charging circuit and does not require maintenance.
6. It has a fault alarm function, and the voltage loss timer provides a pair of normally open contacts. If one phase is disconnected, loses voltage, or the CT is open, the contacts will close. And emit a buzzing alarm sound.

3、 Main technical indicators
1. Timing error:<1s/D
2. Current circuit impedance:<0.05 Ω
3. Power consumption of the whole machine:<3W
4. Voltage loss reference voltage: 78% ± 2v
5. Voltage return reference voltage: 85% ± 2v
6. Current interruption calibration current I1: 0.3% Ib ± 2mA
0.1%Ib±2mA
7. Current recovery calibration current I2: 0.4% Ib ± 2mA
0.15%Ib±2mA
8. Timing range: 9999.99~0.01h
9. Allowable power down time: 30 days
10. Working environment: -10~45 ℃, temperature less than 90%
11. The incoming terminal has a withstand voltage strength of Ø insulation resistance to the casing, with a 500 volt megohmmeter>5 megohms Ø AC withstand voltage of 500 hertz and 2000 volts for 1 minute
12. Dimensions: 236 × 185 × 126mm