Cebora 553 - 10.4 Model 557 Specifications; 11. Power Source Protections; 11.1 Thermal Protection Mechanism; 11.2 Lock Protection Faults

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Item No 557 - WIN TIG DC 350 T
TIG MMA
Mains voltage U
1
3 x 208/220/230 V 3 x 400/440 V 3 x 208/220/230 V
3 x 400/440 V
Tolerance U
1
±10% ±10% ±10%
±10%
Mains frequency 50/60 Hz 50/60 Hz 50/60 Hz
50/60 Hz
Delayed fuse 16 A 16 A 20 A
16 A
Power consumed
7.8kVA35%
6.4kVA60%
5.4kVA100%
9.6kVA40%
7.8kVA60%
6.6kVA100%
9.3kVA35%
7.3kVA60%
6.4kVA100%
11.5 kVA 40%
9.3 kVA 60%
7.8 kVA 100%
Mains connection --- Z
MAX
<= 0.099 ---
Z
MAX
<= 0.099
cos Phi 0.99 0.99 0.99
0.99
Performance ɳ
> 85% > 80%
Consumption in stand-by
< 50 W < 50 W
Currentregulationeld 5 ÷ 280 A 5 ÷ 350 A 10 ÷ 240 A
10 ÷ 280 A
X (duty cycle)
According to standard IEC
60974-1
280A35%
245A60%
220A100%
350A40%
280A60%
250A100%
240A35%
200A60%
180A100%
280 A 40%
240 A 60%
210 A 100%
Open-circuit voltage U
0
54 V 63 V 54 V 63 V
Power-on voltage Up 13.8 kV ---
Maximum welding gas
pressure
6 bar / 87 psi ---
EMC emissions class A
Overvoltage class III
Degree of pollution according
to IEC 60664
3
Certications
CE EAC UKCA
Degree of protection IP23S
Weight 78 kg
Dimensions (WxDxH) 705x1060x975 mm
11 POWER SOURCE PROTECTIONS
11�1 Thermal protection
If the maximum permissible temperature for correct operation of the inverter is exceeded, the current output to the
welding machine is interrupted. In this condition, Err. 74 appears on the display.
The fan remains on to cool the inverter. When the correct temperature is reached, the error disappears and the
welding machine is ready to operate.
11�2 Lock protection
When the welding machine is switched on, a number of checks are performed on the power supply network to disable
welding machine operation in the event of a mains fault.
The anomalies checked are as follows; the presence of these anomalies is indicated on the display by Err. 76.
three-phase welding machines:
− theneutralconductorisconnectedinsteadofaphaseconductor.
− nophaseconductorisconnected.
− -thesupplyvoltagevalueisoutsidethepermittedrange.
single-phase welders:
− -thesupplyvoltagevalueisoutsidethepermittedrange.