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SK-LINE-FS · Cast-resin Busway

400–4,000 A cast-resin busway with IP68 protection.

SIKE PRODUCT SELECTION MANUAL · 20260917

SK-LINE-FS

400–4,000 A cast-resin busway with IP68 protection.

Original source: pages 16, 17. Complete selection dimensions, diagrams and technical tables are included below.

Technical specifications
Applicable standards	GB/T 7251.6-2015; IEC 61439-6:2012
Rated current	400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000 A
Enclosure	Mineral-filled synthetic resin
Protection	IP68
Operating / insulation voltage	1000 V / 1000 V
Unit length	0.5–3 m
Frequency	50 Hz
Wiring	3P / 4P / 5P; 200% N optional
Withstand voltage	8 kV
Insulation resistance	≥20 MΩ
Temperature rise	≤70 K conductive joints; ≤55 K enclosure
Dielectric strength	4 kV / 10 s; no breakdown or flashover
Ambient temperature	−20 to +40°C
Altitude	≤2000 m
Seismic intensity	≤Grade 8
Electrical clearance	≥10 mm
Creepage distance	≥16 mm

Electrical characteristics · original handbook values
Rated current (A)	400	500	630	800	1000	1250	1600	2000	2500	3200	4000
Resistance R20 (mΩ/m)	0.132	0.112	0.097	0.076	0.050	0.037	0.031	0.023	0.018	0.014	0.012
Reactance X20 (mΩ/m)	0.395	0.036	0.066	0.060	0.055	0.043	0.036	0.032	0.025	0.019	0.013
Impedance Z20 (mΩ/m)	0.138	0.118	0.130	0.092	0.073	0.057	0.046	0.035	0.032	0.021	0.018
Voltage drop (V/m), cos φ = 0.9	0.094	0.097	0.110	0.101	0.102	0.102	0.105	0.105	0.107	0.112	0.121

The conductor entry is printed “Cu+A ≥99.97%” on page 17. Refer to the original sheet and confirm the material designation.

All original data, drawings and selection tables for this series. Open a page to zoom in. Values and units in the source are preserved.

See busway and plug-in model codes, structure, joints, installation components and routing dimensions.