JSS-22 Type Double Delay Time RelayDetailed product description：

Application of JSS-22 Double Delay Time Relay:

JSS-22 time relay is used as a delay control component in DC circuits for power system relay protection, control circuits, or industrial control. Especially suitable for situations where high time measurement accuracy is required and the time difference is small.

Relay model name:




Working Principle:
This relay is a static digital time relay, composed of imported CMOS integrated circuits, using frequency division and counting principles to achieve delay. The standard clock pulse is generated by a quartz crystal oscillator.
Once the rated voltage is applied to the relay, the quartz crystal vibrates and generates clock pulses. After frequency division, the clock pulses are counted by the counter. When the counted number of pulses reaches the delay setting value, the trigger flips and drives the execution of the relay action output.
The schematic diagram of the relay principle is shown in Figure 1.



Usage:
4.1 The action time setting is composed of two independent sets of three position 8421 code dial switches and one DIP four speed small switch, which work together. The setting formula is t=kT (s) (where k is the setting number of the DIP four speed small switch and T is the setting number of the dial switch). For example, if k is 0.01 and T is 357, then the setting time is 0.01 × 357=3.57 (s).
4.2 Due to the precise delay of this product, the minimum delay setting value is 20ms. Therefore, it is hoped that the contact points for controlling the input excitation amount of this product will not shake. If used in situations where the input excitation amount shakes, users must make special ordering requirements.

Main technical parameters of JSS-22 double delay time relay:
5.1 Rated DC voltage: 220V, 110V, 48V, 24V.
5.2 Setting range Delay setting range: 0.02s-9990s; minimum step difference: 0.01s.
The operating voltage of the 5.3 action voltage relay is (60% -70%) of the rated value, and it is reliable not to operate if it is less than 60% of the rated value.
The return voltage of the 5.4 return voltage relay should not be less than 10% of the rated value.
5.5 Delay Consistency Under benchmark conditions: a) When the delay setting is between 0.02s and 0.99s, the consistency is not greater than 3ms; b) When the delay setting is greater than or equal to 1s, the consistency is not greater than (0.1% setting value ± 3ms).
5.6 Delay setting error: Under reference conditions, the average error shall not exceed (0.1% of the setting value ± 3ms).
5.7 Return time: The relay return time shall not exceed 15ms.
5.8 Power consumption: At rated voltage, the power consumption of the relay shall not exceed 10W.
5.9 Contact type: Four sets of independently adjustable delay conversion contacts.
5.10 Contact Performance
In a DC circuit with a voltage not exceeding 250V, a current not exceeding 1A, and a time constant of 5ms ± 0.75ms, the breaking capacity is 30W; in an AC circuit with a voltage not exceeding 250V, a current not exceeding 5A, and a power factor of cos φ=0.4 ± 0.1, the breaking capacity is 250VA. The electrical life of the relay is 10 ^ 4 times.
5.11 Working conditions
a) The usage location does not allow explosive media, and the surrounding media should not contain corrosive metals, gases that damage insulation, or conductive media. It is not allowed to be filled with water vapor or have serious mold presence;
b) Strong vibrations and impacts are not allowed in the usage location;
c) The usage location should have facilities to defend against rain, snow, wind, and sand;
d) The usage location does not allow an external magnetic induction intensity exceeding 1.5mT.
The conductive circuit of the 5.12 dielectric strength relay should be able to withstand 2kV (effective value) between the exposed non charged metal parts and the shell, and the input circuit should be able to withstand 1kV (effective value) between the contact points, 50Hz AC test voltage, for 1 minute of testing, and there should be no insulation breakdown or flashover phenomenon.
5.13 Anti interference performance: The relay should be able to withstand a frequency of 1MHz attenuated oscillation wave, with a total voltage amplitude of 2.5kV for the first half wave and a differential voltage of 1kV. The relay should not malfunction or refuse to operate.

Wiring diagram behind the relay:




Relay external dimensions and opening dimensions:
Figures 1 and 5 show the protruding modular insertion structure.

Ordering instructions:
When placing an order, the relay model, specifications, rated voltage, and order quantity must be specified.

JSS-22 Type Double Delay Time Relay（No image available）