Non-Conductive Or Electrically Insulated Pipeline; Figure 2-7. Grounding Procedure, Non-Conduct. Pipeline - ABB 3000 Series Instruction Manual

2.5.3 Non-Conductive or Electrically Insulated Pipeline

If the meter is installed as part of a non-conductive or liquid insulated pipeline (such as totally plastic
pipe, ceramic lined iron pipe, or cast pipe with internal bitumastic coating), the following grounding
procedures apply. Refer to Figure 2-7 to supplement the following text.
1) For this service, the meter requires the use of grounding rings. The grounding rings
should be installed between the meter flanges and the mating flanges of the pipeline. A
gasket is required on both sides of the grounding ring. If the meter is supplied with a
grounding ring/protector plate fastened to the meter flange, only one gasket is required
between the grounding ring/protector plate and the pipeline flange. Proper gasket loca-
tions are shown in Figure 2-5.
2) Attach the bonding wire and ground wire to the tab of the grounding ring. Use internal
tooth lock washers and hex head nut and bolts. The ground wire should be #12 AWG, or
heavier, copper wire.
THE GROUNDING PROBE SHOWN IN FIGURE 2-8 CAN BE
APPLICATIONS. THE PIPELINE MUST BE DRILLED AND TAPPED
AS NOTED IN FIGURE 2-8, WITH THE RESPECTIVE GROUNDING
PROBE INSTALLED ADJACENT TO EACH OF THE PIPELINE

FIGURE 2-7. GROUNDING PROCEDURE, NON-CONDUCT. PIPELINE

10DS3111A INSTRUCTION MANUAL
NOTE
SUBSTITUTED FOR GROUNDING RINGS IN MANY
MOUNTING FLANGES.
2-9