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Marine reverse power relay NGJ-1 relay 110V/380V with overload
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- Origin: Mainland Factory
Reverse power relay is one of the important protection device in the ship power station, a type I NGJ reverse power relay is the latest generation of products, beautiful appearance, complete functions, convenient adjustment, has self-checking function, light weight, small volume, is only a third of the domestic like product, quality stable and reliable technical performance meet the requirements of CCS specification,It is the ideal choice for design, manufacture and use departments.
Technical performance:
1.The device can work normally within the range of power grid voltage change ± 10% of rated voltage and frequency change ± 5% of rated frequency.
2.Power supply of reverse power relay is:
Voltage: 400V, 50/60Hz, A, C two phase, power consumption < 2VA
Rated input current 5A, A, C two-phase, power consumption < 1VA
3.When the inverse power value of the parallel running unit reaches 3-15% of the rated (continuously adjustable), the delay time is 3-10 seconds (continuously adjustable).
4. Load capacity of reverse power relay:
10A 240V AC 200mA 250 DC
10A 28V DC(Resistive load)
5.Environmental conditions:
The ambient temperature is 0-55 ° C and the relative humidity is 95%
There are shocks, vibrations, oil mist and salt mist in the operation of ships.
Usage:
1.The connection is correct according to the external wiring diagram, especially the voltage and current connected to the device must be phase A and C, and the current transformer is connected to the correct polar end.
2.Switch on the power supply, and the "power" indicator lights on.Push the toggle switch to the "test" position, the "over limit" indicator of reverse power and unloading will light up, and output an alarm signal. After several years of delay, the "action" indicator will light up, but the reverse power and unloading output relay will not work, indicating that the internal logic function of the device is normal.The delay time is the delay of reverse power and unloading respectively, and its value can be adjusted by "reverse power delay time" adjustment potentiometer (in the lower left) and "unloading delay time" adjustment potentiometer (in the lower right), clockwise is the direction of increase.Then, set the toggle switch to the "run" position.
Note: The interval of the second test should be greater than 30 seconds.Otherwise, the "delay time" of the second test will be shorter.
3, unit parallel operation, keep the rated voltage, make certain sets of inverse function, up to a certain value of reverse power "overrun" indicator, after time delay "action" indicator, the relay will be the main switch trip, inverse power unit interface, power can be achieved by "action power regulation potentiometer" (top left) to adjust, clockwise to increase the direction.
If the reverse power relay operates when the single machine is running at positive power, the wiring of wiring terminals 1 and 2 should be switched.
4. Setting of unloading action value and delay time:
Turn the "action current" adjustment potentiometer (at upper right) clockwise to maximum.Increase the load current of the generator to the value to be unloaded, and then slowly adjust the potentiometer counterclockwise until the "off-limit" indicator lights up, and then start timing, until the "action" indicator lights up and the secondary load is removed, this time is the delay time of the unloading device action.
The buyer can put forward the setting value requirement when ordering, and it will be set before delivery.
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Marine reverse power relay NGJ-1 relay 110V/380V with overload
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