Datasheet WM2-DIN Datasheet (YZ)

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Page 1

• 3-dgt/6-dgt µP-based indicator

• Manual or automatic scrolling of system and single phase: kW, kVAr, PF, kWh, kVArh, I, V

∆

avg,

VL1-N, VL2-N, VL3-N.

• TRMS measurement of distorted waves (voltage/current)

• All configuration functions selectable by

built-in key-pad

• Password protection of programming parameters

• Degree of protection (front): IP 40

• Standard pulse output

• Optional serial RS 422/485 output

• MODBUS, JBUS protocol.

Product Description

Model Range code System Power supply 1st output 2nd output

Ordering Key

WM2-DINAV53DPX

µP-based power analyzer with a built-in configuration key-pad. The power, PF, current and voltage are system and single phase measure-

ments and indications. The housing is easy to mount on DIN-rail and ensures a degree of protection (front) of IP 40.

Energy Management Power Analyzers Type WM2-DIN

Type Selection

System

3: One phase,

three-phase system, 3 or 4 wires, balanced load; three phase system, 3 or 4 wires, unbalanced load

Range code

AV5: 250/433 VAC - 5 AAC

(max. 300 V (L-N)/ 520 V (L-L) - 6 A)

Power supply

A: 24 VAC, -15% +10%,

50/60 Hz

B: 48 VAC, -15%+10%,

50/60 Hz

C: 115 VAC, -15%

+10%, 50/60 Hz

D: 230 VAC, -15%

+10%, 50/60 Hz (standard)

1st output

P: Pulse, static,

DC type (standard)

2nd output

X: No output (standard) S: Serial output, RS 485

multidrop bidirectional

Power supply ± 0.5% RDG, -15 +10% p.s. Magnetic field < 0.1% f.s. @ 400 A/m

Rated input

Current 2 inputs (one/three-phase

balanced load) 6 inputs (one/three-phase unbalanced load)

Voltage 2 inputs (one/three-phase

balanced load) 4 inputs (one/three-phase unbalanced load)

Insulation among the voltage and the

current inputs: 2000Vrms; among the current inputs: 2000 Vrms

Temperature drift ±250 ppm/°C Display Backlighted LCD, h 13mm,

3-dgt (instantaneous meas.) 6-dgt (energies)

Input Specifications

On request

Accuracy (48 to 62 Hz) Un: 250V (AV5),

In: 5A

Voltage/current

(@ 25°C ± 5°C, R.H. ≤ 60%) ±1% f.s. (0 to 1.2 In,

0.5 to 1.2 Un)

Energy

(@ 25°C ± 5°C, R.H. ≤ 60%) ±1% RDG (kWh)

(hour time base) ±2% RDG (kvarh) (hour time base) (PF≥0.7L/C, 0 to1.2In,

0.5 to 1.2Un)

Active power

(@ 25°C ± 5°C, R.H. ≤ 60%) ±1% f.s. (PF ≥ 0.7 L/C,

0 to 1.2 In, 0.5 to 1.2 Un)

Reactive power

(@ 25°C ± 5°C, R.H. ≤ 60%) ±1% f.s. (PF ≥ 0.8 L/C,

0 to 1 In, 0 to 1 Un)

Power factor (PF)

(@ 25°C ± 5°C, R.H. ≤ 60%) ±1% f.s., PF ≥ 0.7 L/C,

(0.6 to 1.2 In, 1 to 1.2 Un)

Additional errors

Humidity

< 0.3% f.s., 60% to 90% R.H.

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WM2-DIN

Pulse output

Type From 0.1 to 999.9 pro-

grammable pulses for kWh, KVArh, open collector (NPN transistor) V

0.6 VDC/ max. 4 mA

OFF

26 VDC max.

Pulse duration

200 ms (ON), ≥ 200 ms (OFF)

Insulation By means of optocouplers,

4000 V

rms

output to measuring input, 4000 V

rms

output to supply input.

Serial output (on request)

Type RS422/RS485;

Multidrop bidirectional (static and dynamic variables)

Connections 4 wires, max. distance

1200m, termination and/or line bias by means of DIPswitches directly on the instrument

Addresses 255, selectable by key-pad Protocol MODBUS/JBUS

Data (bidirectional)

Dynamic (reading only) System variables:

P, Q, PF, V

L-L

, energies, Single phase variables: P

, Q

L1, PFL1

, V

L1-N

, AL1,

, QL2, PFL2, V

L2-N

, AL2,

, QL3, PFL3, V

L3-N

, A

Static (writing only) All programming data, reset

of energy:

- partial kWh

- partial kVArh

- total kWh

- total kVArh Stored energy (EEPROM)

≤ 999999 kWh ≤ 999999 kVArh

Data format 1-start bit, 8-data bit, no

parity/even parity, 1 stop bit

Baud-rate 1200, 2400, 4800 and 9600

selectable bauds

Insulation By means of optocouplers,

4000 Vrms output to measuring inputs 4000 Vrms output to supply input

Output Specifications

Decimal point position

Instantaneous measurements: Automatic selection according to the current transformer ratio of the CT being connected (max. indication single phase): CT ratio ≤ 5 : 11.11 (25.00A) CT ratio ≤50.0: 111.1 (250.0A) CT ratio ≤ 500.0 : 1111 (2500A) CT ratio ≤999.9 : 11110 (6000A)

Energy measurements: max. resolution:1 Wh/1 VArh min. resolution: 1 kWh/1 kVArh

Max. and min. indication

Voltage Max. 600 min. 0 Current (CT ratio = 1) Max. 6.00 min. 0.00 PF Max. 1.00 min. 0.00 Power (CT ratio = 1) Max. 5.40 min. 0.00 Active energy Max. 999999 min. –199999 Reactive energy Max. 999999 min. 0

Sampling rate 3 times / second Measurements

System variables kW, kVAr, PF, V

L-L

, A, Total energies kWh, kvarh Partial energies kWh, kvarh

(the meters are reset automatically when the values reach 14999*CT ratio)

Single phase variables kW, kVAr, PF, V

L-N

, A

Measurement method TRMS measurement of a dis-

torted voltage/current wave

Coupling type: Direct Crest factor: ≥ 3

Ranges (impedances)

250 V/433 V (≥1 MΩ) 5 AAC (≤ 0.3 VA / ≤ 0.1Ω)

Frequency range 48 to 62 Hz Over-load protection Un: 250 (AV5), In: 5A

Continuous: voltage/current 1.2 Un/In For 1 s

Voltage: 2 Un Current: 20 In

Keyboard 4 keys:

”∆∇”:

- to enter programming phase and password confirmation;

- for value programming and basic measurement scrolling.

“L”:

- for confirmation of new programmed values and going ahead to the next programming step,

- single phase measurement scrolling.

“R”:

- for the reset of the partial counted active and/or reactive energy.

Input Specifications (cont.)

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WM2-DIN

Password Numeric code of max. 3 di-

gits; 2 protection levels of

the programming data 1st level Password “0”, no protection 2nd level Password from 1 to 255, all

data are protected

Measurement scrolling

System: Active power (kW),

reactive power (kVAr),

power factor (cos ϕ),

current (A),

average phase-phase volt-

age (V)

total and partial active ener-

gy (kWh),

total and partial reactive

energy (kVArh)

Partial energy meters:

the counters of kWh and

kVArh are automatically

reset when the energy

reaches the value

(14999*CT). Example: the CT is a 100A/5A so the ratio is 20, consequently the maximum counted energy is 299980 kWh or kVArh.

Single phase: Active power (kW),

reactive power (kVAr), power factor (cos ϕ), current (A), phase-neutral voltage (V)

Transformer ratio For CT up to 5000 A Programmable ratio 0.1 to 999.9 Digital Filter

Filter operating range 0 to 100% of the

input electrical scale Filtering coefficient 1 to 64 Filter action On the display and on the

variable being transmitted

by the serial communication

port.

Software Functions

AC voltage 230 VAC (standard),

-15%+10% 50/60 Hz 24 VAC, 48 VAC, 115 VAC (on request),

-15%+10% 50/60 Hz

Power consumption ≤ 7 VA

Supply Specifications

Operating temperature 0° to +50°C (32° to 122°F)

(R.H. < 90% non-condensing)

Storage temperature -10° to +60°C (14° to 140°F)

(R.H. < 90% non-condensing)

Insulation reference voltage 300 Vrms to ground Insulation 4000 Vrms between all inputs/

outputs to ground

Dielectric strength 4000 Vrms for 1 minute Noise rejection

CMRR 100 dB, 48 to 62 Hz

EMC EN 50081-2, EN 50082-2

Safety standards IEC 61010-1, EN 61010-1 Connector Screw-type,

max. 2.5 mm2wires

Housing

Dimensions 6 DIN modules,

58.5 x 89 x 107 mm

Material ABS,

self-extinguishing: UL 94 V-0

Degree of protection Front: IP40 Weight Approx. 500 g

(packing included)

Approval CE

General Specifications

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WM2-DIN

Mode of Operation

Accuracy class of the instrument as a relation of PI/Pnand PF

Test conditions:

V = 0.8 to 1.2 Un, I = 0.1 to 1.2 In, f = 48 to 62 Hz

Input Star Delta Current

voltage voltage

AV5 Un: 230 V Un: 398 V In: 5 A

I/QI

(installation power)

One phase system:

PI= UI· II · cos ϕ QI= UI· II · sin ϕ

Three phase, 3-wire system:

PI= √3 · UI· II· cos ϕ QI= √3 · UI· II · sin ϕ

Three phase, 4-wire system:

PI= 3 · UI· II· cos ϕ QI= 3 · UI· II· sin ϕ

where:

= the real star voltage of

the electrical system being measured.

= the maximum phase cur-

rent of the electrical system being measured.

cos ϕ

= the average

cos ϕ

of the electrical system being measured.

Pn /Qn (rated power of the instrument):

One phase system:

Pn = Qn= Un· In· CT(ratio)

Three phase, 3-wire system:

Pn = Qn= √3 · Un· In· CT(ratio)

Three phase, 4-wire system:

Pn = Qn= 3 · Un· In· CT(ratio)

where:

= the rated input voltage

of WM2-DIN.

= the rated input current of

WM2-DIN.

CT (ratio)

= the value of the

current transformer ratio.

Example 1:

Model AV5.3 (3-wire system).

UI= 380 V (delta voltage) I

= 265 A (single phase cur-

rent)

cos ϕ

= 0.85 (system power

factor) (CT=300A)

= 398 V

= 5 A

CT (ratio) =

300

= 60

= √3 · UI· II· cos ϕ

= √3 · 380 · 265 · 0.85 = 148.07 kW

= √3 · Un· In· CT (ratio) = √3 · 398 · 5 · 60 = 206.56 kW

148.07 = 0.716

Pn206.56

Example 2:

Model AV5.3 (4-wire system).

UI= 220 V I

= 110 A (CT=300A)

Cos ϕ

= 0.85 (sin ϕ = 0.52)

= 230 V

= 5 A

CT (ratio) =

300 A

= 60

5 A

= 3 · UI· II· sin ϕ = 3 · 220 · 110 · 0.52 = 37.75 Kvar

= 3 · Un· In· CT (ratio)

= 3 · 230 · 5 · 60 = 207 Kvar

37.75 = 0.183

Pn207

In both examples the accuracy of the measurement is 1% f.s. when considering the changing of the measured voltage from 0.9 Un to 1 Un and the measured current from 0.1 In to 0.9 In with a

cos ϕ of 0.85 (sin ϕ 0.52).

PI / P

QI / Q

Active Power

Reactive Power

Test conditions:

V = 0.8 to 1.2 Un, I = 0.1 to 1.2 In, f = 48 to 62 Hz

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WM2-DIN

Wiring Diagrams

Single phase input connections

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CT connection

Direct connection

Three phase/3-wire input connections - Balanced loads

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CT connection (3-wire system)

Direct connection (3-wire system)

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Waveform of the signals that can be measured

Figure G Sine wave, undistorted

Fundamental content 100% Harmonic content 0% A

rms

= 1.1107 | A |

Figure H Sine wave, indented

Fundamental content 10...100% Harmonic content 0...90% Frequency spectrum 3rd to 16th harmonic Required result: additional error < 1%

Figure I Sine wave, distorted

Fundamental content 70...90% Harmonic content 10...30% Frequency spectrum 3rd to 15th harmonic Required result: additional error < 0.5%

Mode of Operation (cont.)

L N

L1 L2 L3

Load

Source

Load

Source

Load

Source

Load

Source

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WM2-DIN

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Wiring Diagrams (cont.)

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CT connection (4-wire system)

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CT connection (4-wire system)

Direct connection (4-wire system)

Fig. 6

Fig. 10

Fig. 9

Direct connection (4-wire system)

Three-phase, 3-wire input ARON connections - Unbalanced load

Fig. 5

Three phase, 4-wire input connections - Balanced loads

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CT connection (3-wire system)

Three phase, 4-wire input connections - Unbalanced load

Fig. 7

L1 L2 L3 N

L1 L2

L3 N

L1 L2

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Fig. 8

Direct connection (3-wire system)

L1 L2

Load

Source

Load

Source

Load

Source

Load

Source

Load

Source

Load

Source

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WM2-DIN

PO W ER ANALYZER

KWh

KVArhTOTL1 L2 L3

cosϕ

CARLO GAVAZZI

Front Panel Description

- To enter into the programming procedure and select programming functions together with the ”L” key.

“L”:

To scroll all the single phase variable of each basic measurement

“R”:

To reset the partial counted energies (kWh, kVArh).

2. Display

Instantaneous measurements:

- 3-digit (maximum read-out 999)

Energies:

- 6-digit (maximum read-out 999999).

Alphanumeric indication by means of LCD display for:

- Displaying the configuration parameters

- All the measured variables.

3. Connection terminal blocks

4. Dip-switch

- For the selection of 2/4 wire connection, line biasing and/or line termination (only in case of RS 485 option)

1. Key-pad

Set-up and programming procedures are easily controlled by the 4 pushbuttons.

” ” and ” ”

- To scroll all the basic measurements (system variables)

- To increase or decrease programming values

Sequence of the variables on the display

L L

SINGLE PHASE VARIABLES

PHASE 1

PHASE 2

PHASE 3

L1 - L2 - L3

(V )

L1-N

(V )

L1 L2 L3

kVAr

L1 L2 L3

total

partial

kVARh

kWh

kVARh

cosϕ

kVAr

L2-N

L3-N

(average

total

partial

SYSTEM

VARIABLE

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WM2-DIN

107 mm

89 mm

90 mm

108 mm

49.5 mm

58.5 mm

45 mm

Dimensions

Upper terminal board

Lower terminal board

Terminal boards

46 mm