IEC 60745-2-5 Circular Saw Closure Durability and Lower Guard
Recovery Time Test Equipment
Product Information:
This test device for circular saw switch and lower guard conforms
to EN 60745-2-5: 2010 Annex M21.18, Annex M21.18.301, Annex
M21.203, Annex M21.301, figure M.301, IEC60745-2-5:2003 Annex
BB.20.102, EN 60745-2-5:2010 clause 17.101 and clause 19.102.3.
It is used to test the circular saw switch performance and circular
saw lower guard’s durability and recovery time.
Structure and test principle:
This equipment is composed of two parts, the mechanical system and
electrical control system.
Mechanical system is the table for circular saw. There are a switch
and sample socket on the table, operator can press the switch to
turn on or off the load power supply to the test sample; different
sizes of circular saws can be placed and fixed on the table; on the
table, device for locking the switch of the hand-held circular saw
in the “on” position; the blade can extend to the bottom of the
table through the middle groove; under the groove, there are a the
putter and two position sensors , which can be drive the lower
guard of the circular saw to be opened or closed.
The electrical control system consists of the load power supply,
PLC, 7 Inch Touch screen and etc.
Can achieve manual operation and automatic operation.
Manual control:
the operator can press the “lower guard open button” under manual
operation, then the lower guard gradually manually open, when the
putter makes the lower guard to be opened to the maximum open
position (corresponding position sensor indicator is lighting), at
this time, operator can stop the lower guard opening action; then
operator press “circular saw switch ON/OFF” to be ON or OFF, the
switch locking device can automatically lock or release the switch
of the circular saw. Operator can press the switch button on the
table to achieve to supply or not supply load voltage to the test
sample.
Automatic operation:
1. Operator can pre-set the interval time of the locking device
lock or release the circular saw
switch, the interval time of the load voltage supplied to the test
sample, and the opening residence time of the lower guard of the
circular saw, after that, operator only press “Start” on touch
screen, the above testing for the circular saw switch will be
processed automatically.
2. The following is mainly for the circular saw lower guard’s
durability and recovery time test : The saw is to be set for a
90°cut and oriented in the horizontal plane. The lower guard is to
be cycled from the full closed position to the maximum open
position and then released for 50 000 cycles at a rate not less
than 10 cycles per minute, the number of times is recorded by the
position sensor. The close time of the lower guard is not less than
0.3s, if exceed 0.3s, then the number of a timeout is counted. The
close time of the lower guard of the last time is recorded after
the equipment runs to the required test times, and the equipment
will automatically stop.
Technical Parameters:
| S/N. | Item | Parameters | Remark |
| 1 | Work station | 2 | 2 stations work synchronously, not each station independently |
| 2 | Power supply | Single phase AC220V/60Hz | |
| 3 | Load voltage | 0~240V | |
| 4 | Max. output power | 5KW | |
| 5 | Electric control | PLC control, 7 Inch Touch screen operation | |
| 6 | Test times | 0-999999 times,can be preset | |
| 7 | Detection time | 0-9.99s,can be displayed | Automatic judgment of closure time limit |
| 8 | Automatic / Manual speed | 0-30 cycles/minute,can be preset | |
| 9 | Manually Rotate Clockwise/ Manually Rotate Counterclockwise | Touch control | |
| 10 | Size and weight | 1400mmx760mmx940mm about150kg | |
