SLOVENSK LEGLNA METROLGIA, n. o. Certifikan orgn pre vrobky

Hviezdoslavova 31, 974 01 Bansk Bystrica SKTC-177

Date: 18th July 2008 Number of pages: 11

FFIINNAALL PPRROOTTOOCCOOLL

No. 013/1432/08 MI-003

Product: active electrical energy meter Type: EC3 Manufactucer: Fabryka Aparatury Pomiarowej PAFAL Spka Akcyjna

ul. ukasiskiego 26 58-100 widnica, Poland

Applicant: Fabryka Aparatury Pomiarowej PAFAL Spka Akcyjna

ul. ukasiskiego 26 58-100 widnica, Poland

Application No.: B 04/2008/MI-003 Assignment No.: B 04/2008/MI-003 Certification scheme: 1b Distribution list: SKTC 177 (NB 1432)

applicant

Final Protocol may be reproduced or published only as a whole and upon written permission of the authorised body SKTC-177.

Final Protocol 013/1432/08 MI-003

Page 2 of 11 1 General provision This Final Protocol shall serve as an evidence for the authorized body SKTC-177 (notified body 1432), Hviezdoslavova 31, 974 01 Bansk Bystrica authorizing it to issue Decision on certification and EC - type examination certificate in accordance with 11, Art. 10 of Law No 264/1999 Coll. on technical requirements on products and on amendments and supplements of some acts as later amended (hereinafter referred to as Law), in compliance with the Government Ordinance of the Slovak Republic No 294/2005 Coll. on measuring instruments (hereinafter referred to as Government Ordinance) for product type:

active electrical energy meter EC3 1.1 Product description 1.1.1 Characteristics Static four tariff-rates electrical energy meter (Fig. 1) intended for direct measurement of active energy in three-phase 4-wire power network in households and small industrial and sales companies. The meter variety is marked by means of additional characters according to the following rule: 16 EC3 g r n / 1

1 = load profi le recording n = transformer power supply - = RC power supply r = multi-rate register, real time clock g = electrical pulse output type of meter value of ratio Imax/Iref (maximum to reference current)

1.1.2 Principle of operation Active energy is measured by the specialized integrated circuit. Current is measured on resistor shunt and voltage is measured on voltage divider. These two signals are filtered and then multiplied each other creating instantaneous value of active power, which is integrated onto active energy and accumulated in the register. When some determined energy value is accumulated, the circuit generates a pulse. Pulses from measuring circuits are counted by the microcontroller in their internal

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registers. When the determined number of input pulses is accumulated, output pulse is generated. It controls test LED and pulse output device. Accumulated number of pulses is equivalent of measured energy. They are stored in appropriate registers depending on TOU schedules. Values from these registers are periodically recorded into EEPROM non-volatile memory and presented on LCD. Energy value is stored with resolution of 0.01 kWh. The meter stores metering data from current billing period and from maximum of 16 previous periods. Energy values are stored in cumulative registers of non-volati le memory and protected with 16-bit block character check (BCC). Current values of the registers are copied into additional security registers. All metering data can be read through the meter interfaces when the meter is energized from the power network. Current metering data can be read on LCD in each mode of operation. Current and voltage circuits can be disconnected during testing the meter. It can be tested by means of traditional meter test equipment. 1.1.3 Essential parts (Fig. 2)

- three measuring circuits (identical for each phase circuit); - register block with LCD; - power supply.

1.1.3.1 Measuring circuit In the measuring circuit are used alternatively integrated circuits BL6503, ADE7755 and MCP3905A. All of them have the same structure and principle of operation. Structure of BL6503 circuit and terminals description is in Fig. 4; characteristics of BL6503 circuit for amplification of 16x is in Fig. 5. Block diagram of circuit BL6503 is in Fig. 6. Electrical parameters of these circuits are in producer catalogues (see 2.3.1). 1.1.3.2 Register Register with block diagram according to Fig. 7 consists of:

- microcontroller MSP430F43x or MSP430F44x of Texas Instruments company (function diagram in Fig. 8), energized from the power supply or from backup battery when AC voltage is interrupted;

- LCD driver; - EEPROM memory type 25AAxxx (function diagram in Fig. 9) with serial

interface SPI; - peripheral devices (the circuit signaling voltage interruption, optical

interface, switches, LEDs).

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LCD displays (Fig. 14) continuously metering data when the meter is energized from power network. When it is energized from backup battery, measuring data are displayed for the programmable interval of 2 to 10 minutes. The display is activated by means of the button in A position.

The list of displayed items is programmable; it is possible to set up maximum 32 items by its (OBIS) codes: Code Displayed item

0.0.0 serial number of the meter 0.9.1 current time [HH:MM:SS] 0.9.2 current date [YY_MM_DD] 15.8.0 total active energy [kWh] 15.8.1 A-rate active energy [kWh] 15.8.2 B-rate active energy [kWh] 15.8.3 C-rate active energy [kWh] 15.8.4 D-rate active energy [kWh] 15.6.0 maximum demand in current billing period [kW] 15.36 overload number in current period (option) 15.2.0 cumulative maximum demand [kW] 0.1.2 date and time of ending the last billing period 15.8.0 DA total active energy in the last billing period [kWh] 15.8.1 DA A-rate active energy in the last billing period [kWh] 15.8.2 DA B-rate active energy in the last billing period [kWh] 15.8.3 DA C-rate active energy in the last billing period [kWh] 15.8.4 DA D-rate active energy in the last billing period [kWh] 15.6.0 DA maximum demand in the last billing period [kW] 15.36 DA overload number in the last billing period (option) 0.1.0 number of billing period endings 0.2.0 firmware version 0.2.2 tariff code

Changing of the meter parameters is protected by sealed button (Fig. 12), which must be pushed in B position, 8-character password and encrypting algorithm. The meter firmware records number of changes with the date and time of the last one. 1.1.4 Alternative parts

- serial interface RS-232 or RS-485 according EN 62056-21; - pulse output device; - adjustable magnetic field detector with LED, recording the time of

interference of magnetic field on measuring elements, recording active energy measured during interference of magnetic field with the date and time of the last interference;

- load profile recording.

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1.1.5 Nonessential parts - 1.1.6 Essential functions

- measuring of active energy and maximum demand; - multi-rate measurement of active energy; - manual or automatic ending billing period; - storing the metering data for 16 billing periods; - reading of measuring data during the supply interruption; - date of the last supply interruption; - number of supply interruptions; - cumulative time of battery operation; - date of the last programming; - number of parameters programming; - register of the meter errors; - signalization of measuring circuits malfunction; - incorrect phase sequence identification.

1.1.7 Non-essential functions

- maximum demand recording (date and time of occurrence); - number of billing periods; - cumulative demand recording; - internal real time clock with the time of use (TOU) schedules

- tariff-rates (4); - seasons (12); - weekly schedules (10); - daily schedules (16); - floating holidays (40); - fixed holidays (unlimited);

- communication with the meter and programming by means of a special software (KOMPAF);

- disconnection of current and voltage circuits during testing the meter (it can be tested by means of traditional test equipment).

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Page 6 of 11 1.2 Basic technical and metrological parameters Parameter Unit Value

Reference voltage Un V 3 230/400 (3 220/380; 3 240/415)

Reference frequency fn Hz 50

Reference current* Iref A 5 10 15

Maximum current Imax A 60, 65 or 80 80

Accuracy class (index) - A B A B A B

Transitional current Itr A 0,5 0,5 1 1 1,5 1,5

Minimum current Imin A 0,25 0,25 0,5 0,5 0,75 0,75

Starting current Ist A 0,025 0,02 0,05 0,04 0,075 0,06

Meter constant imp/ kWh 1500

Mechanical class - M1

Electromagnetic class - E2

Climatic class C (-25 to +70) or (-40 to +70)

Storage temp. range C - 40 to + 80

Protection degree - IP55

Installation conditions - outdoor (humidity without moisture condensation)

Weight kg 1,2 * Note: reference current Iref = 10 Itr = Ib for direct connected meters according to EN 62052-11. 1.3 Technical and metrological requirements

- construction, technical and metrological parameters of the meter must comply with the documentation presented within the process of type certification;

- all the characteristics of the measuring instrument (including those not mentioned) shall meet the respective requirements of Government ordinance.

1.4 Marking and inscriptions The following data shall be marked on the meter (Fig. 12):

a) manufacturers mark or name; b) type of the meter; c) serial number and year of product