The document describes several models of arc welding rectifiers from R D Weld Products Pvt Ltd: the Rock Arc 400, 500, and 630. The rectifiers are suitable for DC shielded metal arc welding with various electrodes. They provide features like easy arc strike, remote current control, stable arc, and good weld finish. The technical specifications table lists the input power, voltage and current ranges, duty cycles, protection class, efficiency, and dimensions for each model. The rectifiers can be used for fabrication in industries like power plants, steel plants, and mining.

1. ROCK SERIES
FULLY THYRISTORISED
ARC WELDING RECTIFIER
R D WELD PRODUCTS PVT LTD
total welding solutions
ROCK ARC 400
ROCK ARC 500
ROCK ARC 630
FEATURES & BENIFITS
1. Suitable for DC SMAW/MMA Welding
with all types of electrodes (Rutile & Basic)
2. Easy Arc Strike without any adjustment.
3. Remote control for the welding current
makes the operation convenient & easy
4. Good dynamic character with smooth &
stable arc.
5. Controlled molten weld pool
6. Excellent Weld Finish / Appearance.
APPLICATIONS / FABRICATION OF EQUIPMENTS FOR
Power Plants
Chemical Process Plants
Steel Plants
Nuclear Plants
Mining and Structural Fabrication amongst others

2. R D WELD PRODUCTS PVT LTD TECHNICAL SPECIFICATIONS
total welding solutions
MODEL ROCK ARC 400 ROCK ARC 500 ROCK ARC 630
SPECIFICATION
INPUT SUPPLY 415 V AC +/- 15% / 50-60 HZ
MAX.INSTALLED POWER 26.3KVA 28.2HP 29KVA 31HP 47.6 KVA 51 HP
INPUT CURRENT (A) 24.2 29.3 47
NO LOAD VOL TAGE (V) 78 DC 78 DC 78 DC
OUTPUT VOLTAGE RANGE (V) 22.4-36 22-40 24-44
OUTPUT CURRENT RANGE (A) 60-400 50-500 100-630
OUTPUT DUTY CYCLE AT 60% 400(A) 500(A) 630 (A)
OUTPUT DUTY CYCLE AT 100% 310(A) 387(A) 485 (A)
POWER FACTOR 0.65 0.65 0.65
PROTECTION CLASS IP-23 IP-23 IP-23
INSULATION CLASS H H H
EFFICIENCY 65% 65% 65%
COOLING FORCED AIR FORCED AIR FORCED AIR
WEIGHT 155 KG 195KG 255KG
OVERALL DIMENSIONS (mm) 770*460*900 770*460*900 800*515*960
MAX. DIA OF ELECTRODE 4 MM 5 MM 6.3 MM
SUITABLE FOR WELDING WELDING WELDING / GOUGING
* Unremitting Development Entitle Us To Change Specificataion Without Prior Notice
CORPORATE OFFICE
#24, Majithia Indl Estate, W T Patil Marg, Deonar, Mumbai - 400088. T: +91 22 67358989 F: +91 22 67358999
SALES OFFICE info@rdweld.com www.rdweld.com
E-3, MIDC, P zer Road, Turbhe Naka, Navi Mumbai - 400703. T: +91 22 27631666, 27688896 F: +91 22 27622922