KSHGDC Military Hand Crank generator
1 .General Description
1.1 Application
This hand generator is an emergent DC power source for radio set
and battery charging with 16.8V and 5V voltage. It can supply power
continuously operate in floating charge the storage battery for
military emergency.
Product features:
- Power the equipment at any time by hand in the field
- The overall power is more than 10W, small in size and high in power
- Provide 12V output and USB 5V output to power various devices
- All-aluminum alloy shell, more solid and reliable
- The whole machine is less than 600g, more portable
1.2 Main specifications
Main parameters
| Feature | Description | Note |
| Charge ability | 16V±1V 2.5A(normal) | |
| Output ability | 14.5V±0.5V 5A | |
| Output voltage clamp value | 29Vdc | The output voltage is positively correlated with the cranking speed |
| Cranking speed | 90-150 r/min (normal) | Control the cranking speed to make sure the green led on; this
means the generator working in the proper working condition |
| Output voltage | 12-24V orderable | |
| Output power | 60W normal, 80W max | |
| voltage ripple | 25mV | |
| Output voltage fluctuation according the variable load | 10% of output nominal value (max) | |
| Working life | 1200 hours nominal | |
| Output short-circuit protection | Supported | |
| Application environment | Temperature:-40℃～+70℃. Relative humidity : 0%～95%(40℃). Vibration:5.5-200Hz @1.5g | Rain-proof |
| Size | body 145mm× 85mm× 70mm. | Weight 1.8Kg (with crank) |
| Framer: 800mm×430mm×285mm | Weight 2.8Kg (with crank) |
1.3 The delivery package consists
| Item | Quantity | Note |
| Generator body | 1 pc | |
| Integrated Framer | 1 pc | |
| Power transmission cable | 1 pc | The cable length is 3 core cable for 2 output and a common
loopback. |
| Shoulder girdle | 1 pair |
|
One generator, one power supply cable with plugs in canvas bag.
2 Operation principles
This hand generator is operated by manpower. By means of gearing
up, it produces the driving force to make the permanent magnet
synchronous generator to generate power. The alternating voltage,
after being rectified by silicon diode, filtered by condensers and
then regulated by transistor series regulator, is converted to even
DC output voltage. The output voltage for charging is unregulated.
2.1 Gear transmission
This hand generator's power is transmitted by three serial gears,
the power from handles is transmitted to the rotor gear shaft of
the generator and the makes the rotor rotate. The total
transmission ratio I=Il xI2=7.46x6.71 =50 As the cranking speed is
11 Or/min, the rotor speed of the generator is about 3000r/min.
2.2 The generator
The structure of the generator is out-rotor type; the stator
consists of 3-phase distributed and pitched windings in star
connection. The windings are combined with stator core as entirety.
The rotor is made of rare earth permanent magnet is star shape and
eight-pole, air-erased magnet is used for stabilization. When the
handles are cranked, there is relative motion of the magnetic field
with respect to the stator, and 3-phase alternating voltage is
induced in the stator winding with a frequency of approximately
200Hz.
2.3 Circuit part
The circuit is made of 3-phase bridge type rectifier and condenser
filter. The power supplying output is stabilized to DC by series
transistors. The digital display indicates the working state
including voltage and current. Control the swing speed to keep the
green indicator led on during swing the crank, the yellow led on,
should speed up and the red led on to indicator speed down.
2.4 Protection method
This generator is provided with over-voltage protection circuit to
limit regulator input voltage and charging output voltage at
29V±0.5V and to prevent the instrument supplied from being damaged
by over-speed cranking and high voltage
