Testing An Induction Or Solid State Meter Via Kyz - Radian RM-111 Operation Manual

Application 7 Application 7

13.0 Testing an Induction or Solid State Meter via KYZ

Equipment Needed:
• RM-111 Automated Comparator
• RM or RD Portable Watthour Standard
• Induction or solid state meter with KYZ and a known Mp ratio (revs per pulse)
• RM-KYZ or RR-KYZ Pulse Input Adapter
• Universal test jack and a source of voltage and a current such as a watthour test board
Test Steps:
1. Make the appropriate connections so that the meter(s) under test (DUTs) and the RM or RD
Primary Reference Standard(s) are powered from the same voltage and current source.
2. Apply test voltage, current and auxiliary power. At this point, both the DUT and the RM or RD
reference standard(s) should be running.
• Connect all standard pulse outputs to the RM-111.
• The RM or RD Primary Reference Watthour Standard will output pulses continuously once
auxiliary power, voltage, and current have been applied.
• The Ke factor of any meter can be calculated by manipulating
the following constants:
Ke = The watthour pulse constant of each pulse from the pulse initiator (KYZ). The value of the
Ke depends upon the meter Kh and the type of test conducted.
RM-111 Operations Manual
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