Chint Solar (Zhejiang) Co.,Ltd. | Add:1335 Bin´an Road, Binjiang District, Hangzhou | P.C: 310053
Tel: 0086-571-5603 1888 | Fax: 086-571-5603 2316 | Website: http://energy.chint.com/
Figure d. The 400mm pitch mounting hole size is 7x10mm, and 4 M6 stainless steel bolts
are required (Figure e).
c) Secure each bolt to the frame with stainless-steel washers, one for each side of the
mounting structure; and screw on either a stainless-steel spring washer or a toothed lock
washer. Finally, secure with a stainless steel nut.
d) The reference value of tightening torques should be within 9~12Nm & 17~23 Nm
respectively for M6 & M8 bolts, depending on bolt class. For the bolt grade, the technical
guideline from the fastener suppliers should be followed. For the torque value,
recommendations from specific clamping hardware suppliers should prevail.
Fig f
4.3.2 Clamping on the frame surface
Modules can be laid either across the supporting bars (Figure g) or parallel to the edge of
frame (Figure h).
Fig g Fig h
