IEC 60335-2-21 Electric Water Heaters Pulse Pressure Withstand
Testing Machine
Product information:
This water heater liner pressure testing machine is designed to
meet the requirements of IEC 60335-2-21 :2012 clause 22.47.
The machine is designed for water pressure impact resistance of
water storage type electric water heater liner. It can work
continuously for 24 hours. The machine adopts PLC control and touch
screen display operation. The main accessories are imported and
domestic high quality brands, the operation is stable and reliable.
Function Description:
Peel off the outer casing and other electrical components of the
water heater to be tested, the water heater container assembly with
the heating tube installed is performed leak detection at rated
pressure, the container must be sealed at a rated pressure of
100±5%. Inject water in the container at ambient temperature
(except the silicon copper container), and empty the air in the
container, then alternate pressurizing the container with the
pressure between 15% and (100±5)% of the rated pressure. Process
pressurization for 80K times at the frequency of 20-40times/min. At
the end of each pressurization of 10,000 times, the pressure is
maintained at least at the maximum working pressure for 10 min.
After the high and low pressure test, the liner should without
visible significant deformation.
Technical Parameters:
a. Test station: 1 (satisfying the maximum 500L liner)
b. Water tank capacity: ≤500L (changes depending on tank capacity
and number of stations)
c. Test water pressure: According to the standard, it should be set as two groups, that is, 0.15MPa when the
pressure is released and 0.75MPa when the pressure is increased.
d. Maximum water pressure: ≤0.9Mpa
e. Test frequency: 20 to 40 times / minute (varies according to the
size of the inner container)
f. Test time: Pump boost, the holding time can be set according to
test standard requirements of 0.2-3S
g. Number of tests: 0~999999 times can be set (the number of
required tests can be preset, and it will stop automatically after
the preset test times are finished.)
h. Cycle time: 0~999999 times can be set.
(For every 10,000 tests, hold pressure for 10 min under 0.75 MPA
pressure, the next test can be carried out only liner is without
visible significant deformation)
i. Pressure holding time: pump boost, the holding time can be set
according to test standard requirements of 0.2-3S
j. Sample placement: horizontal and horizontal, left and right
structures for customer selection.
k. With power-down protection function, the counter stops counting
after power-off, and the counter is automatically saved to memorize
data.
l. Pointer type shockproof pressure gauge (used to display the
current pressure and life test pressure, the pressure upper limit
can be set), the ball valve is added in front of the pressure
gauge, and the waterway can be closed in case of emergency to
protect the pressure gauge.
m. The electrical part of the equipment has leakage protection
function, and the electric control chamber is installed on the side
of the machine, which is fully waterproof.
n. The equipment has the functions of sample leak detection and
protection. When the sample leaks, the equipment will automatically
stop after the detection probe is sensed, preventing causing
uncertain accidents.
o. Sample connector: Standard configured with connector of M14×1.5,
and different connectors can be provided according to the samples
(client should offer us the connectors’s type/size and ect., cost
is additional)
p. Water consumption: According to the sample volume + 50L,
max.500L.
q. Power supply: three phase AC380V ± 10, 50HZ.
r. Equipment dimensions: WDH1800*900*2000mm
Main Configuration:
No.: | Name | Brand | Remark |
1 | PLC | Mitsubishi | Test program writing process |
2 | 7” touch screen | Weinview | Test manipulation |
3 | Chamber | Customized | Stainless steel |
4 | Booster pump | Made in China | Stainless steel |
5 | Frequency converter | EURA | |
6 | Pressure Sensor | Made in China | |
7 | Digital pressure gauge | Made in China | |
8 | Storage tank | Customized | 304 stainless steel |
9 | Angle seat valve | AirTAC | |
10 | Water level sensor switch | Made in China | |
