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How does one enable EN50160 PASS/FAIL evaulations on a Circuit Monitor 3000 (CM3000), Circuit Monitor 4000 (CM4000), or Power Meter 800 (PM800)?

The CM3, CM4, and PM8 evaluate the following
electrical characteristics in accordance with EN50160:

• Frequency
• Magnitude of the supply voltage
• Supply voltage variations
• Rapid voltage changes – voltage magnitude (All) and flicker (CM4000T only)
• Supply voltage dips
• Short interruptions of the supply voltage
• Long interruptions of the supply voltage
• Temporary power frequency over voltages
• Transient over voltages (CM4000T only)
• Supply voltage unbalance
• Harmonic voltage


By default after enabling EN50160, the PASS/FAIL tests are disabled. Details about each test and how to enable them are stated in the meter's reference manuals. This article is designed as a quick setup guide for enabling PASS/FAIL testing.

Note: EN50160 must first be enabled in SMS, PMCU, or from the front display before setting pass/fail limits.




These test values must be configured using the command interface:

Write value 9020 to 8000
Write a non-negative value to each register above(if applicable).
Write value 1 to 8001
Write value 9021 to 8000

These registers must be written to because they are -32,768 by default (a.k.a. disabled).

Example of an EN50160 table for a PM870:


If the number of allowable events is greater than the register set limit, the test will show a fail:


Note: ION Enterprise has similar tables to read the EN50160 information from these meters.

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