Medium Voltage Metering Equipment.
Current and voltage instrument transformers and primary metering units for shielded power systems in the 5kV–35kV class — governed by IEEE C57.13, for utility revenue metering and industrial and commercial load monitoring.
- Voltage class
- 5–35kV
- Instrument types
- 2
- Governing standard
- IEEE C57.13
Instrument transformers & standards.
Metering equipment is built around instrument transformers — CTs and VTs — that scale primary current and voltage to standardized secondary signals. Their requirements and accuracy classes are defined by IEEE C57.13.
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IEEE C57.13
The governing standard — electrical, dimensional, and mechanical requirements and accuracy classes for current and inductively coupled voltage instrument transformers used in metering and control on AC systems.
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Current transformer (CT)
Scales primary current down to a standard secondary current. Specified by ratio, burden rating, and accuracy class to supply the meter with a safe, proportional current signal.
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Voltage transformer (VT)
Also called a potential transformer — scales primary voltage down to a standard secondary voltage. Specified by ratio, burden, and accuracy class for the metering circuit.
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Accuracy class
Sets the allowable transformer correction factor over a specified burden range — for example 0.3, 0.6, or 1.2 under IEEE C57.13. Revenue metering generally requires the tighter classes.
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Primary metering unit
A metering enclosure that houses the instrument transformers and connections at the MV service point, supplied for pad, pole, or cabinet mounting depending on the service configuration.
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Mounting
Pad, pole, or cabinet — selected by whether the installation is overhead, padmounted, or inside an enclosure, and matched to the service configuration.
Equipment types.
Current transformers
Scale primary current down to a standard secondary current for measurement. Specified by ratio, burden rating, and accuracy class under IEEE C57.13 so the meter receives a safe, proportional signal. Exact ratios and accuracy class are confirmed per project.
Voltage transformers
Also called potential transformers — scale primary voltage down to a standard secondary voltage for the metering circuit. Specified by ratio, burden, and accuracy class, paired with the CTs to supply the meter.
Primary metering units
Metering enclosures that house the instrument transformers and connections at the MV service point. Supplied for pad, pole, or cabinet mounting depending on the service configuration, and configured per project.
FAQ.
What is medium-voltage metering equipment?
Medium-voltage metering equipment is the set of instrument transformers and enclosures used to measure current and energy on MV circuits, scaling primary current and voltage down to standardized secondary signals for connected meters.
The instrument transformers are governed by IEEE C57.13.
What is the difference between a CT and a VT?
A current transformer (CT) scales primary current down to a standard secondary current for measurement. A voltage transformer (VT), also called a potential transformer, scales primary voltage down to a standard secondary voltage.
Together they supply the meter with safe, proportional signals.
What standard governs metering instrument transformers?
IEEE C57.13 defines the electrical, dimensional, and mechanical requirements and accuracy classes for current and inductively coupled voltage instrument transformers used in metering and control of equipment in the generation, transmission, and distribution of alternating current.
What does accuracy class mean for revenue metering?
Accuracy class — for example 0.3, 0.6, or 1.2 under IEEE C57.13 — sets the allowable transformer correction factor over a specified burden range.
Revenue metering generally requires the tighter accuracy classes to keep billing measurement within limits.
How is metering equipment mounted?
Metering equipment is supplied for pad, pole, or cabinet mounting depending on the service configuration and whether the installation is overhead, padmounted, or inside an enclosure such as a primary metering unit.
Does Hawk publish metering equipment pricing or lead times?
No. Metering equipment is configured and priced per project.
Send the voltage class, CT and VT ratios and burden, accuracy class, and mounting configuration through Contact — pricing and availability are confirmed once those are defined.
Sourcing metering equipment?
Send the voltage class, CT and VT ratios and burden, accuracy class, and mounting configuration — Hawk MV Supply will fill in the rest.
Medium-voltage metering equipment across the 5kV–35kV class.
Hawk MV Supply sources medium-voltage metering equipment for the full 5kV through 35kV class — current and voltage instrument transformers and primary metering units for utility revenue billing and industrial and commercial load monitoring. Instrument transformers scale primary current and voltage down to standardized secondary values for the connected meter: a current transformer (CT) scales primary current, and a voltage transformer (VT), also called a potential transformer, scales primary voltage. Their electrical, dimensional, and mechanical requirements and accuracy classes are defined by IEEE C57.13. Metering equipment is specified by voltage class, CT and VT ratios and burden ratings, accuracy class, and mounting configuration — pad, pole, or cabinet; accuracy class sets the allowable transformer correction factor over a defined burden range, which determines whether a unit qualifies for revenue metering, and exact values are confirmed per project.
Metering equipment is installed at utility, commercial, and industrial service points where energy must be measured for billing or load analysis, sitting between the incoming MV circuit and the meter to scale primary current and voltage to safe, standardized secondary signals. Metering equipment is configured and priced per project; specifications shown are typical industry ranges, with product availability and exact values confirmed at quote.