Westweld ZX7-400HD, Manual Instruction

Page: 8 / 15

2
2.2 Safety precautions
2.2.1 Open and check the machine: only qualified personnel should perform to avoid danger or machine damage
2.2.2 Turn off input power before open the machine, do not touch the electrical conductors to avoid electric shock.
2.2.3 Dirt and dust which may cause short circuit should be kept to a minimum.
2.2.4 Welding may produce fumes and gases hazardous to health. Use enough ventilation and exhaust at the arc to keep
fumes and gases away from the breathing zone.
2.2.5 Arc rays may cause eye injury, please do not watch the arc nor expose to the arc rays.
2.2.6 Remove fire hazards from welding area, welding sparks and hot materials from welding can easily go through small
crack and cause fire.
3 Technical specification
3.1 Main parameter:
Model ZX7-400HD ZX7-500HD ZX7-630HD
Input Power 3
～
380/415V 50/60Hz
Rated input capacity
（
KVA
）
16.5 25 34.5
Rated input current
（
A
）
25 38 52
Open cuircuit voltage
（
V
）
83.5
Rated welding current
（
A
）
400 500 630
Rated duty cycle
（％）
60%
Current adjust range
（
A
）
10
～
400 10
～
500 10-630
Insulation grade F
Dimension(L×W×H)(mm) 570×290×530 630 ×290×540 630 ×290×540
Weight
（
Kg
）
38 42 43
* Rated duty cycle 60% means, take 10min as the working cycle, the welding machine work 6min under the rated current
status, rest for 4min. When the welding machine work more than 6min, the temperature in the machine will higher than the
setting value, the overload indicator will on, and machine no output until the temperature in the machine lower to the setting
value. When the overload indicator off, the machine can work again.
3.2 Welding electrode and related parameter setting
422 type electrode
Electrode dia.(mm) 2.5 3.2 4.0 5.0
Welding current(A) 70~110 100~150 160~210 200~260
507 type electrode
Electrode dia.(mm) 2.5 3.2 4.0 5.0
Welding current(A) 70~110 100~140 140~180 180~230
4 Hardware Overview
This machine including: shell, inner part, handle and base, while the inner part include: cooling fan, main transformer,
IGBT modules, filter reactor, fast recovery diode modules and PCBs etc.
5 General description
5.1 Working principal
ZX7–HD series welding machine adopts IGBT as the main circuit switch. The three-phase AC input power inverted to 20KHz