Siemens 9300, 9350, 9330 manual Security Mechanisms, Additional Revenue Metering Modules

9300 Series User’s Guide Security Mechanisms

Power Provider / Utility

LINE

V1 I11 I12 Delivered Imported V1

ReceivedExported

Revenue Model

Power Consumer

LOAD

I11 I12

Regular Model

The revenue meter’s energy output register labels follow the revenue metering terminology; the energy labels for kVAh, kVARh and kWh are different from the non-revenue devices as follows:

imp is del	tot is del+rec
exp is rec	net is del-rec

For example, the meter’s output register kVARh tot will be kVARh del+rec in the revenue meter model.

Additional Revenue Metering Modules

There are additional modules incorporated into the template of the revenue meter. Some of these modules are used in the calculation and logging of both V2h and I2h (used for transformer and line loss compensation).

Security Mechanisms

To meet Government regulations and Utility security requirements, the revenue meter incorporates three types of security systems:

a traditional anti-tamper mechanical seal on the meter base unit

a password-based security system that permits password protected minimum/ maximum resets (for example, Sliding Window Demand reset)

a hardware-based security system that prevents modification of revenue quantities after the meter is sealed

Chapter 6 - Revenue Metering Page 139