ANSI C12.16 : 1991

1 Scope
2 Definitions
3 References
4 Requirements applicable to all solid-state
      electricity meters
4.1 General
4.2 Mounting
4.3 Classes
4.4 Voltage and frequency
4.5 Test Amperes
4.6 Wiring arrangements
4.7 Typical form designation
4.8 Displays
4.9 Display constant (multiplier)
4.10 Direction of flow
4.11 Provisions for testing
4.12 Nameplates
5 Requirements applicable to detachable solid-state
      electricity meters
5.1 Dimensions
5.2 Hanger
5.3 Sealing
5.4 Connections
6 Requirements applicable to bottom-connected solid-
      state electricity meters
6.1 Dimensions
6.2 Hanger
6.3 Sealing
6.4 Connections
6.5 Terminal blocks
6.6 Terminals
7 Classes of finish and test requirements for meter
      enclosures
7.1 Classes of finish
7.2 Test for class I (general-purpose) finish
7.3 Test for class II (corrosion-resistant) finish
7.4 Raintightness
8 Procedure for assigning form designation
9 Test procedures for solid-state electricity meters
9.1 General
9.2 Selection of solid-state electricity meters for
      approval tests
9.3 Rules governing the acceptance of types
10 Performance characteristics
10.1 Accuracy tests
10.2 External influence - initial conditions
Tables
1 Form designations
2 Starting load test
3 Load performance test
4 Effect of variation of power factor for single-
      element meters
5 Effect of variation of power factor for two-
      element meters: network, three-phase three-wire,
      three-phase four-wire delta, and two-phase five
      wire
6 Effect of variation of power factor for two-
      element three-phase four-wire wye meters
7 Effect of variation of power factor for three-
      element three-phase four-wire wye meters
8 Effect of variation of voltage
9 Effect of variation of frequency
10 Equality of current circuits for single-element
      meters
11 Equality of current circuits for multi-phase
      meters having one or more three-wire elements
12 Equality of current circuits for multi-phase
      meters
13 Temperature-rise test specifications
14 Effect of internal heating
15 Test for independence of elements in two-element
      meters
16 Test for independence of elements in three-element
      meters
17 Effect of external magnetic field
18 Effect of variation of ambient temperature
19 Effect of temporary overloads on accuracy
20 Effect of current surge in ground conductor

Establishes acceptable performance criteria for solid-state electricity meters including: voltage and frequency ratings, class designations, service connection arrangements, test current values, pertinent dimensions and environmental tests for type "S" and "A" meters.