94
6000 Bird Dog Plus Only
3, 14, 15, 16, & 17. Use the Large I Probes when the bundles are too large or the currents are
over 100A. Spinlab also has extensions (6000-SC3-C20) for the Large I Probes for you to
get to the weatherhead. Call Spinlab for pricing.
In the following discussion, either of these probes can be used interchangeably.
CT Rated Meters
F.3.2.1 Form 3 Meters—The form 3 meter is a single phase meter that has 2
configurations: 2 wire and 3 wire. All Form 3 meters are CT rated and have 1 stator and
one current coil, so you can perform a CT ratio and burden test on these circuits as well as
the meter verify tests. You will use the voltage cable with red and white alligator clips
(leave the black alligator clip unattached) and the duckbill connector or a clamp-on CT for
secondary current.
A Form 3-2 wire circuit is straightforward. Only one test is required to test this form meter:
Meter Test Hookup
Secondary Voltage Cable
o Red Alligator clip to voltage
o White alligator clip to neutral. This produces V
1N
.
o Black alligator clip leave unconnected
Secondary Current Cable—A phase duckbill connector copper side up or A
phase clamp-on CT with arrow in direction of current flow (I
1-2
)
A Form 3-3 wire is attached as follows. Only one test is required to test this form meter:
Meter Test Hookup
Secondary Voltage Cable
o Red Alligator clip to line 1
o White alligator clip to line 2. This produces V
12
o Black alligator clip leave unconnected
To Next Page
Loading...