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   Multifunction meters

PSCH-4TM.05MN

PURPOSE

Direct-connect energy meters are designed for multi-rate commercial or technical accounting of active and reactive energy of the forward and reverse direction (inclusive of losses) in three-phase AC networks with the following parameters: voltage - 3 x (120 - 230) / (208 - 400) V, base (maximum) current - 5 (80) A, frequency - 50 Hz.

Energy meters allow for load control via a respective built-in relay and load control signal generation at the configurable test output according to various programmable criteria.

Energy meters allow to:

  • maintain two four-channel arrays of load power profile data (inclusive of losses) with the programmable integration time;
  • maintain a multichannel parameters profile array with the programmable integration time:
  • record active and reactive power peaks (inclusive of losses);
  • measure three-phase network and energy quality parameters;
  • maintain event logs.

Energy meters have various communication interfaces, support ModBus-equivalent, SET-4TM.02-compatible communication protocol and may be used both in standalone mode and as part of automated measuring and information systems for electric power fiscal accounting (AMIS EPFA) as well as automated dispatch control systems (ADCS).

TECHNICAL FEATURES

  • Built-in communication interfaces RS-485, optical port, PLC, RF (terminal radio modem and ZigBee-equivalent radio modem).
  • ModBus-equivalent, SET-4TM.02-compatible communication protocol with augmented addressing function.
  • Capability to install additional interface modules to ensure remote access to energy meter's RS-485 interface through GSM, PLC, Ethernet and RF networks (for indoor mounted energy meters).
  • Multi-function backlit liquid crystal display.
  • Two configurable test outputs and two configurable digital inputs (for indoor mounted energy meters).
  • Built-in relay and load control signal generation at the configurable test output according to various programmable criteria.
  • Energy-independent electronic seals and a magnetic field sensor intended to detect the effect of a magnetic field with the increased strength. Exposure and opening time values are recorded in the event logs.
  • Two independent basic four-channel arrays of load power profile data with the programmable integration time of 1 to 60 minutes and data retention time of up to 170 days if the integration time is 60 minutes.
  • Extended parameters profile array may be configured with regard to selection of number (up to 16 parameters) and type of profiled parameters along with the programmable integration time of 1 to 60 minutes and data retention time of up to 248 days if the integration time is 30 minutes.

FUNCTIONAL CAPABILITIES

Energy pricing and measured energy archives

Energy meters are designed for three-phase and separate for each network phase (single-phase) multi-rate accounting of active and reactive energy of the forward and reverse direction.

Rater:

  • four rates (T1-T4);
  • four types of day (working days, Saturday, Sunday and holidays);
  • twelve seasons (for each month of a year);
  • discrete value for the time of day rate comes up to 10 minutes; time of day rates sequence in a day totals up to 144;
  • schedule of holidays and a list of rescheduled days.

Energy meters maintain archives of data on rated energy measured (three-phase and single-phase, active and reactive, forward and reverse direction) and non-rated energy inclusive of losses (three-phase and single-phase, active and reactive, forward and reverse direction) and accounts of the number of impulses coming from external devices through digital inputs:

  • total reckoning from the reset (running total);
  • for the current and previous day;
  • at the beginning of the current and previous day;
  • for each previous calendar day with the data retention time of up to 30 days;
  • at the beginning of each previous calendar day with the data retention time of up to 30 days;
  • for the current and twelve previous months;
  • at the beginning of the current and twelve previous months;
  • for the current and previous year;
  • at the beginning of the current and previous year.

Data retention time for the daily measured non-rated active and reactive energy of the forward and reverse direction up to 248 days if the integration time for the 3rd array of parameters is 30 minutes.
Energy meters may be configured for single rate operation irrespective of the rate card used.

Load power profiles

Energy meters of all design variants maintain two basic arrays of load power profile data with the programmable integration time of 1 to 60 minutes. Basic arrays are non-configurable and their structure is identical to the structure of the profile data array of earlier versions of energy meters (SET-4TM.02 (M), SET-4TM.03 (M), PSCH-3.4TM.05 (M, D), PSCH-4TM.05MK, PSCH-4TM.05MD).

Each basic array may be configured for maintenance of load power profile data with due account for active and reactive power losses in power transmission line and power transformer with the integration time of 1 to 30 minutes.

Data retention time for each basic array comes up to 114 days if the integration time is 30 minutes and 170 days if the integration time is 60 minutes.
Parameters profile

Apart from two basic arrays of load power profile data energy meters maintain an independent array of parameters profile (extended array or 3rd array of profile data) with the programmable integration time of 1 to 60 minutes.

Extended parameters profile array may be configured with regard to selection of number and type of profiled parameters along with the data retention format:

  • number of (any) profiled parameters - up to 16;
  • retention time for (any ) four parameters comes up to 248 days if the integration time is 30 minutes and 341 days if the integration time is 60 minutes.

Recording of load power peaks

Energy meters may be used as recorders of power (active, reactive, forward and reverse direction) peaks for each basic array of power profile data. In this case a schedule of twelve seasons of morning and evening peaks is applied.

Power peaks are recorded in energy meter archives:

  • reckoning from the reset (manual reset or reset on an interface command);
  • for the current and twelve previous months.

Measurement and accounting for losses

Energy meters calculate active and reactive power losses in power transmission line and power transformer on the basis of measured current values and entered values of rated power losses. Rated power losses are calculated on the basis of passport data for on-site power and measuring equipment.

Determination of network parameters and energy quality indices

Energy meters determine instantaneous values of physical parameters typical for the three-phase network with the integration time of 0.2 to 5 s (10 to 250 periods of the 50 Hz network) and may be used as network parameters measuring units or sensors.

Energy meters of all design variants irrespective of their configuration function as four-quadrant measuring units with due account for direction and angle between current and voltage phases and each network phase and may be used for assessment of correctness of meters connection.

Energy meters may be used for measuring of energy quality indices with metrological data in accordance with technical specifications judging by parameters of steady-state deviations (line-to-line, positive-sequence) of voltage, network frequency, voltage dip and overvoltage.

Energy meters measure and record residual voltage and duration of voltage dips along with overvoltage magnitude and duration for each network phase and three-phase network in the event logs. Energy meters keep statistical data for voltage dips and overvoltages for each network phase and three-phase network with capability to dump the data on an interface command.
Test outputs and digital inputs

Energy meters have two configurable test outputs of the main transmission unit. Each test output may be configured for generation of:

  • remote metering impulses of one of the energy accounting channels (active, reactive, forward and reverse direction, inclusive of losses);
  • signal indicating crossing of the programmable power (active, reactive, forward and reverse direction) limit;
  • remote control signals;
  • clock accuracy signal;
  • load control signal corresponding to various programmable criteria.

Indoor mounted energy meters have two digital inputs which may be configured:

  • for calibration mode control (only the first digital input);
  • for calculation of the running total of impulses coming from external devices (leading, trailing or both edges);
  • as a remote signal system input.

Load control

Energy meters allow for load control via a respective built-in relay and load control signal generation at the configurable test output according to various programmable criteria. As for the load control energy meters may operate in the following modes:

  • mode of load power limiting;
  • mode of energy limiting for a certain day;
  • mode of energy limiting for a certain accounting period;
  • mode of network voltage control;
  • mode of energy meter temperature control;
  • mode of scheduled load control.

The specified modes may be allowed or prohibited depending on any specific combination.
Irrespective of modes set the load control signal is generated on an interface command of the operator.
All events related to load control are recorded in an event log.

Logs

Energy meters maintain event logs, energy quality indices logs, power limit crossing log and status data log.

Display unit

Indoor mounted energy meters are equipped with a liquid crystal display (LCD) for representation of energy measured and measurable parameters as well as three buttons for display modes control.
Outdoor mounted energy meters have no display units, therefore representation of measurable parameters and control of display modes is effected via a C-1.02 remote terminal connected to the energy meter via a radio channel established by a built-in radio modem.

Same as indoor mounted energy meters the energy meter terminal has a multi-function backlit LCD and three buttons for display modes control. The terminal may be powered both from an AC network with a wide range of input voltage values and from two AAA batteries.

Energy meter display may operate in one of the following modes:

  • current readings display mode;
  • basic parameters display mode;
  • accessory parameters display mode;
  • technological parameters display mode.

Communication interfaces

Irrespective of design variants all energy meters are equipped with an optical interface (optical port). Depending on design variants of energy meters other interfaces may be present in the following combinations:

  • RS-485 interface and optical port;
  • RS-485 interface, optical port and terminal radio modem;
  • PLC-modem and optical port;
  • PLC-modem, optical port and terminal radio modem;
  • ZigBee-equivalent modem and optical port;
  • ZigBee-equivalent modem, optical port and terminal radio modem;
  • optical port and terminal radio modem.

RS-485, PLC and ZigBee-equivalent interfaces are used as network trunk interfaces.
Energy meters with a radio modem and a ZigBee-equivalent modem operate at frequencies allocated under the decision of the RF state frequency committee No. 7-20-03-001 as of 07.05.2007 for short-range devices with the transmitter power output which does not require the RF state frequency committee permission for use of radio-frequency channels.
Any energy meter communication interface supports a ModBus-equivalent SET-4TM.02-compatible communication protocol and provides the capability to read out archived data and measurable parameters, as well as read out, program and reprogram configurable parameters.
Indoor mounted energy meters with the RS-485 interface provide the capability to install additional interface modules to ensure remote access to energy meter's RS-485 interface through GSM, PLC, Ethernet and RF networks. Thus, energy meters become communicators allowing for connection of other on-site energy meters to their RS-485 interface without any additional interface modules and establishment of a local network with capability of remote access to each on-site energy meter.
When energy meters are operated through communication interfaces "SET-4TM configurator" or user software may be used.
Access to parameters and data through communication interfaces is limited by read and write passwords (two access levels). Provision is made for a special access level identical to the read access level but offering the capability of load control on the operator command. Metrological coefficients and factory settings are protected by a hardware jumper and are not accessible without breaking of seals.

Electronic seals and magnetic field sensor.

Energy meters are equipped with two energy-independent electronic seals:

  • for the energy meter housing cover;
  • for the terminal box cover.

Electronic seals allow to determine opening / resealing time for the respective cover and generate an entry in the event log. Electronic seals may operate both when the energy meter power is on and off.

Energy meters are equipped with a magnetic field sensor intended to detect the effect of a magnetic field with the increased strength of 20.7 mT (density 1600600 A/m) and above. Time of energy meters exposure to increased strength magnetic field is recorded in the event log.

SPECIFICATIONS

Parameter name

Value

Accuracy rating for measurement (in the forward and reverse direction) of
   active energy
   reactive energy


1

Base (maximum current), A

5 (80)

Starting current (sensitivity), mA

0.004 Ib

Rated voltage, V

3 x (120 - 230) / (208 - 400)

Preset operating voltage range, V

0.8 Urated to 1.15 Urated
3 x (96 - 265) / (166 - 460)

Maximum operating voltage range (for any two phases), V

0 to 440

Rated network frequency, Hz

50

Operating frequency range, Hz

47.5 to 52.5

limits of acceptable mean relative measurement error, %:
   active power (of the forward and reverse direction at active, inductive and capacitive loads), δP

1.0 at 0.1 Ib ≤ I ≤ Imax, cos φ = 1, cos φ = 0.5
1.5 at 0.05 Ib ≤ I < 0.1 Ib, cos φ = 1
1.5 at 0.1 Ib ≤ I ≤ Imax, cos φ = 0.25

   reactive power (of the forward and reverse direction at active, inductive and capacitive loads), δQ

2.0 at 0.1 Ib ≤ I ≤ Imax, sin φ = 1, sin φ = 0.5
2.5 at 0.05 Ib ≤ I < 0.1 Ib, sin φ = 1
2.5 at 0.1 Ib ≤ I ≤ Imax, sin φ = 0.25

   full power, δS

δs = δQ (similar to reactive power)

   voltage (line-to-ground, line-to-line, positive-sequence and their averaged values) δU 

0.9 within the range of 0.8 Urated to 1.15 Urated

   network frequency and its averaged value, δF

0.05 within the range of 47.5 to 52.5 Hz

Limits of acceptable mean absolute measurement error:

 

   residual voltage dip and overvoltage, V

0.01 Urated (within the range of 0 to 1.4 Urated)

   voltage dip and overvoltage duration, s

0.02 (within the range of 0.01 to 180 s)

Built-in clock accuracy under normal conditions when switched on or off, higher than, s/day

0.5

Change of clock accuracy within the operating temperature range, s/C/day:
   a) when power is on within the temperature range of -40 to +60 C, less than
   b) when power is off within the temperature range of -40 to +70 C, less than


0.1
0.22

Full power consumption by each series circuit, VA, max

0.1

Active (full) power consumption by each parallel voltage circuit, W (VA), max.

120 V

230 V

0.7 (1.1)

1.1 (1.9)

Maximum current consumption if powered from a standby AC or DC supply source with or without account for the additional interface module consumption (12 V, 500 mA), mA

= 100 V

= 265 V

~ 100 V

~ 265 V

30 (75)

20 (40)

50 (120)

40 (70)

Liquid crystal display:
   a) number of displayed digits
   b) price of the low order unit for energy value displayed in kWh (kVArh)


8
0.01

Energy meter constant in basic (A) and calibration modes (A), imp/(kWh), imp/(kVArh)

A = 250, B = 8000 

Bit rate, bit/s:
   RS-485 interface
   optical port
   PLC
   RF


38400, 28800, 19200, 9600, 4800, 2400, 1200, 600, 300
9600 (constant)
2400
9600

Data retention time in case of power supply interruption, years:
   information, more than
   internal clock, min.


40
12 (lithium-type battery supply)

Data protection

three access levels passwords and hardware protection of memory allocated for metrological coefficients

Self-diagnostics

cyclic, constant

Operating temperature range,C:
   for outdoor mounted energy meters
   for indoor mounted energy meters


-40 to + 60
-40 to +70

Calibration interval, years

12

Mean time between failures, hours

165000

Mean lifetime, years

30

Recovery time, hours

2

Weight, kg:
  for indoor mounted energy meters
  for outdoor mounted energy meters

 

1.9
1.9

Dimensions, mm:
   for outdoor mounted energy meters
   for indoor mounted energy meters
   outdoor mounted energy meters with the channel bracket


299 x 170 x 101
198 x 256 x 121
350 x 256 x 129

DESIGN VARIANTS

Energy meters production range includes models which differ by availability or non-availability of the load control relay, types of communication interfaces and mounting methods (indoor or outdoor installation). Energy meters design variants are listed in Table 1.

Energy meters of all design variants are insensitive to the AC network constant component and may be used for connections with the following rated phase voltage values: 120, 127, 173, 190, 200, 220, 230 V in case of direct connection to the network.

Energy meters of all design variants function as four-quadrant measuring units (four accounting channels) for active and reactive energy and power of the forward and reverse direction, have identical metrological characteristics and common software. Energy meters may be configured for operation in unidirectional mode (three accounting channels) to measure:

  • active energy of the forward and reverse direction as active energy of the forward direction (in modulus);
  • reactive energy of the first and third quadrant as reactive energy of the forward direction (inductive load);
  • reactive energy of the fourth and second quadrant as reactive energy of the reverse direction (capacitive load).

Energy meters of all design variants are equipped with an optical interface (optical port) and a magnetic field sensor intended to detect the effect of a magnetic field with the increased strength.

Energy meters with the RS-485 interface (00-03 design variants) may be equipped with additional interface modules to ensure remote access to energy meter's RS-485 interface through GSM, PLC, Ethernet and RF networks. Additional interface modules may function as a gate allowing to gain the remote access to other on-site energy meters connected into the RS-485 local network. Types of additional interface modules installed are listed in Table 2.

Designation of energy meter design variant 

Load control relay

RS-485

Built-in modems

PLC

ZigBee-equivalent

RF

Indoor mounted energy meters

PSCH-4TM.05MN.00

+

+

-

-

+

PSCH-4TM.05MN.01

-

+

-

-

+

PSCH-4TM.05MN.02

+

+

-

-

-

PSCH-4TM.05MN.03

-

+

-

-

-

PSCH-4TM.05MN.04

+

-

+

-

+

PSCH-4TM.05MN.05

-

-

+

-

+

PSCH-4TM.05MN.06

+

-

+

-

-

PSCH-4TM.05MN.07

-

-

+

-

-

PSCH-4TM.05MN.08

+

-

-

+

+

PSCH-4TM.05MN.09

-

-

-

+

+

PSCH-4TM.05MN.10

+

-

-

+

-

PSCH-4TM.05MN.11

-

-

-

+

-

Outdoor mounted energy meters with the split architecture

PSCH-4TM.05MN.12

+

-

+

-

+

PSCH-4TM.05MN.13

-

-

+

-

+

PSCH-4TM.05MN.14

+

-

+

-

-

PSCH-4TM.05MN.15

-

-

+

-

-

PSCH-4TM.05MN.16

+

-

-

+

+

PSCH-4TM.05MN.17

-

-

-

+

+

PSCH-4TM.05MN.18

+

-

-

+

-

PSCH-4TM.05MN.19

-

-

-

+

-

Types of additional interface modules installed

Module designation

Name

01

GSM S-1.02.01 communicator

02

PLC  M-2.01.01 modem (single-phase)

03

PLC  M-2.01.02 modem (three-phase)

04

3G GSM S-1.03.01 communicator

05

Ethernet M-3.01.ZZ modem

06

ISM M-4.01.ZZ modem (430 MHz)

07

ISM M-4.02.ZZ modem (860 MHz)

08

ISM M-4.03.ZZ modem (2400 MHz)

09

M-5.01.ZZ optical modem

ZZ interface module design variants

 

 

New products

Time-schedule of workshops

Copyright

Copyright © 2012
Nizhny Novgorod Factory named after M.V. Frunze.
All rights reserved.
 
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