Rice Lake SURVIVOR ATV - Manual (Page 14)

10 ATV Portable Truck Scale Assembly Instructions
3.5 Installing Transient Protection
A two-year lightning protection package comes standard all truck scales. The individual components of this
comprehensive package are designed to protect AC and DC portions of the system. The lightning protection
package includes:
• DC transient protection included with standard J-box board(s). This DC transient protection handles up to
eight load cells. Scales with more than eight load cells require additional J-boxes.
• Self-contained DC transient protection unit in the home run cable at the indicator.
• A 115 VAC uninterruptable power supply/surge protector in the AC line before the indicator.
• Number 10 bare ground conductor cable buried in earth from scale frame to DC transient board at indicator
and finally to the AC power ground lug.
10 ga. bare ground wire to DC
protection ground before indicator
Ground Lug
Located in
J-box Pocket
Figure 3-3. Grounding and Transient Protection on ATV Scale
Note
Serial communications (if used) may also require transient protection to fully protect entire system. A TP-232
DC Transient Protection is suitable protection for serial communications lines. In addition, printers, remote
displays and other devices connected to serial communications should be protected with AC transient
protection.