WELICHI LB4/500 Shock Preventor (Voltage Reducing Device) when fitted to an AC welding machine it reduces the welding power source’s Open Circuit Voltage (OCV) across the output terminals to a safe voltage not exceeding 25V. Stipulated by The Workplace Safety and Health (Shipbuilding and Ship-repairing) Regulations 2008 Part VII Clause 54.2 and Singapore Standards CP 88 Part 1: 2001 (Amendment No. 1) Clause 5.8.4 (a).
| Model | Constant Voltage | Constant Current | Low Load Voltage | Start-up | Sensitivity | Dimension (L x W x H) | Weight (kg) |
| LB4/500 | AC 415V / 50Hz | 100 Ampere | e < 24 Volts | < 0.06s | < 500 !& | 21x10x0.9 cm | 1.20 |
