Low Current Module Setup Menus; Using Optional Low Current Modules - Arbiter Systems Portable Power Sentinel 933A Operation Manual

3.9

Using Optional Low Current Modules

Two low-current input modules for the Model 933A are available for both
current-output and voltage-output CT's. Each has two operating ranges;
a high range (up to 1.2 Arms or 2.4 Vrms) and low range (up to 50 mA
rms and 100 mV rms) Both modules are identical except for the input
connectors. The 933A-02 has two sets of shrouded banana connectors for
each phase, including neutral, voltage and current inputs. The 933A-
03 has a unique single jack that allows for voltage and current input
signals. Arbiter Systems produces dedicated cable assemblies (purchased
separately) for the Model 933A-03.
Figure 3.11: Low Current Module Setup Menus
3.9.1 Installing
To configure either the 933A-02 or the 933A-03, you will need to replace
the current module already installed in the 933A with the 933-02 or 933-03.
The expected current and voltage ranges will not appear without installing
the specific current module.
Make sure to power OFF the Model 933A before replacing a current
module. Keep your fingers away from the ON/OFF Power Switch!
1. Loosen the hold-down screws using a medium slot screwdriver.
2. Grasp the module and pull it out slowly.
3. Align the new module into the nylon guides and gently slide it into
the slot guides.
4. Tighten the two hold-down screws to secure the module.
5. Start the 933A and press the SETUP key and 6-Current Setup to
check the settings displayed for the module (as seen in Figure 3.11).
Select range as desired.
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