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

The DJL-Y 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 primary and secondary 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 metering and provides an essential verification basis for the occurrence of phase failure and voltage interruption in electrical energy metering, achieving fair and 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、 Product model and specifications
Model Category Nominal Voltage Calibration Current
DJL-V type three-phase three wire 3 × 100V3 × 1A 3 × 5A
DJL-Y type three-phase four wire 3 × 220/380V
3×57.7V/100V3×1A 3×5A

2、 Function and Features
1. The DJL-Y 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. Voltage resistance strength of the incoming end to the casing
Ø Insulation resistance 500 volts megohmmeter>5 megohms
Ø AC withstand voltage of 500 Hz and 2000 volts for 1 minute
12. Dimensions: 236 × 185 × 126mm