INSTALLATION

Auxiliary power supply

AC:

operational voltage range 85 – 264V,

50/60 Hz, approx. 5.5VA

DC:

operational voltage range for R: 24V ±10%

or P: 85 – 143V; ripple 10% p-p max.;

approx. 5.5W (approx. 230mA at 24V)

Operating temperature: -10 to +50°C (14 to 122°F)

Operating humidity: 30 to 85% RH (non-condensing)

Grounding: grounding resistance ≤100Ω

Mounting: panel flush mounting

Dimensions: W110×H110×D126 mm (4.33"×4.33"×4.96")

Weight:

500 g (1.10 lbs)

Accuracy

Voltage, current: ±1.0%

Watt, var: ±1.5%

Power factor: ±3.0%

Frequency: ±0.5%

Demand: ±1.5%

Zero-phase voltage: ±1.5%

Max. zero-phase voltage: ±1.5%

Watthours: ±2.0% (load current 5 – 100%, power factor 1.0)

±2.5% (load current 10 – 100%, power

factor 0.5, lag current)

Varhours: ±2.5% (load current 10 – 100%, power factor 0)

±2.5% (load current 20 – 100%, power factor 0.866)

±3.0% (load current 10%, power factor 0.866)

Temp. conditioning incl. in the accuray: 23 ±10°C

(73.4 ±18°F)

Freq. conditioning incl. in the accuracy: 45 – 65 Hz

Response time:

≤2 sec. (0 – 100% ±1%)

range

Power failure protection: VT/CT scaling factors,

watthours, max. zero-phase voltage and

demand are stored in non-volatile memory.

Insulation resistance: ≥100MΩ with 500V DC

Dielectric strength: 2000V AC @1 minute

(voltage input to current input to trans-

mission section to display switch input to

aux. power to ground terminal)

2000V AC @1 minute

(circuit to ground terminal; not applica-

ble to analog or transmission terminal)

Surge withstand voltage: 1.2/50 µsec., ±4.5kV

(input to output or ground; not applica-

ble to analog or transmission terminal)

FRONT PANEL CONFIGURATION

The front display configuration varies according to

model numbers (display items).

A. Display

LED:

10 mm (.39") 7 segment, orange

Display items:

DISPLAY

x1 kWh

x10 kWh

V

S – T

R – S

T – R

A

S

R

T

DISPLAY

V RESET

A

S.R.

E F

G H

J

B

D

A

A

A

C

B. Multiplication factor: watt, watthours, var or

varhours on the display (A)

C. Line current indicators: Pressing DISPLAY (J) or

"A" (F) button changes lines (elements).

D. Line current indicators: Pressing DISPLAY (J) or

"V" (G) button changes lines.

E. Primary rating: indicating the primary rating of

current, voltage, watt or demand

F. Line current switch

G. Line voltage switch

H. Reset:

resetting the max. zero-phase voltage or

max. demand; same as the external reset

input via output terminals

J. Display: changing display items, turning the light

on or off; same as the Dis. input via

output terminals

DISPLAY ITEMS

REMARKS

Current

4

Single-phase / 3-wire

4

3-phase / 3-wire or 4-wire

Voltage

4

3-phase / 3-wire or 4-wire

4

3-phase / 4-wire

Watt

kW

4

– indicator (reverse flow),

×1, ×10 scaling factor ind. LED

Watthours

kWh

5

×1, ×10, ×100 scaling factor LED

Var

kvar

4

– indicator (lead),

×1, ×10 scaling factor ind. LED

Varhours

kvarh

5

×1, ×10, ×100 scaling factor LED

Power factor

PF

3

– indicator (lead)

Frequency

Hz

3

4

4

Demand

DA

4

Measuring/displaying

preset element only

Max. demand

MDA

4

When values exceed the preset values, corresponding LEDs blink.

NO. OF

DIGITS

Ripple:

0.5% p-p max.

Auxiliary supply voltage effect: ±0.1% over voltage

P. 3 / 16

ES-6481 Rev.9