User's Manual

Testing, Troubleshooting, and Maintenance
8-4 CENTRON Meter Technical Reference Guide
Testing Using the Disk Emulation Annunciator
The CENTRON meter is capable of visually being tested by using the Watt Disk
Emulation Annunciator.
Recommended Energy Testing Procedures
Testing solid-state meters on test boards that were designed primarily for
electromechanical meters may give unexpected results. Erroneous readings have
been known to occur on “light load” tests when the test sequence calls for said
light load test to follow immediately after the full load test. The problem is caused
by improper “jogging” and can be avoided by sequencing the test in order of
applied power such that the lowest power is tested first. This problem does not
exist on modern test boards with the latest test software.
AEP Test Codes
Table 8.1 shows the AEP Test Codes.
Field Testing
Field testing of the CENTRON meter may be accomplished with conventional
methods using either the infrared test LED or the disk emulation annunciator
(when supplied). For details on the operation of the annunciator, see Page 8-2.
Required Hardware
The typical field test setup consists of a phantom load, portable standard, and an
infrared test pulse adapter with a counter or snap switch assembly. CENTRON
meters purchased without a test link will require a more sophisticated loading
circuit.
Number of Pulses per sec Wapp
1hr
3600
------------
1Kh××=
Table 8 .1 AE P Tes t Cod es
Meter Specification Code
CL100 120V 2W 1 Phase Type C1S 15TA 1.0Kh FM1S 60Hz 2B
CL200 240V 3W 1 Phase Type C1S 30TA 1.0Kh FM2S 60Hz 1N
CL320 240V 3W 1 Phase Type C1S 50TA 1.0Kh FM2S 60Hz 2J
CL20 240V 2W 1 Phase Type C1S 2.5TA 1.0Kh FM3S 60Hz 2F
CL20 120V 2W 1 Phase Type C1S 2.5TA 1.0Kh FM3S 60Hz 2E
CL20 240V 3W 1 Phase Type C1S 2.5TA 1.0Kh FM4S 60Hz 2G
CL200 120V 3W 2 Phase Type CN1S 30TA 1.0Kh FM12S
60Hz
2H
CL200 120V 3W 2 Phase Type CN1S 30TA 1.0Kh FM25S
60Hz
2I