MODEL: 54U

54U SPECIFICATIONS

ES-6487 Rev.10 Page 3/10

http://www.m-system.co.jp/

Active / reactive / apparent power, Power factor, Frequency,

Harmonic contents

■ Open Collector

Programmable for either alarm or energy count.

Max. rated load: 130 V DC @50 mA

Continuous rated load: 130 V DC @30 mA

Saturation voltage: 1.5 V DC

Measurands applicable to alarm: Voltage, current, current

intervals, neutral current, frequency, energy, energy

intervals

(ON delay, deadband and other parameters are selectable)

Measurands applicable to count: Energy;

Pulse rate selectable within

0.1 – 10 000.0 kWh/p, kvarh/p, kVAh/p

INSTALLATION

Power consumption

•AC: < 8 VA; Less than 13 VA for 'External interface' code 7

and 9

•DC: < 4 W; Less than 6 W for 'External interface' code 7

and 9

Operating temperature: -10 to +55°C (14 to 131°F)

Storage temperature: -20 to +80°C (-4 to +176°F)

Operating humidity: 0 to 90 %RH (non-condensing)

Mounting: Panel flush mounting (M5 screws (torque 2 N·m)

or mounting brackets)

Weight

Configuration Code 1: 500 g (1.1 lb)

Configuration Code 2: 525 g (1.16 lb)

PERFORMANCE

Accuracy

(at 23°C ±10°C or 73.4°F ±18°F, 45 – 65 Hz)

Voltage: (accur.±0.3 %)

Rated voltage at ≥ 100 V

100 V at < 100 V

Current: (accur.±0.3 %)of Span 1 A or 5 A

Power: (accur.±0.5 %)

Rated voltage/current at ≥ 100 V

Wattage as listed below at < 100 V:

173.2 W (1 A) or 866 W (5 A) for 3 ph/3 w

100 W (1 A) or 500 W (5 A) for 1 ph/2 w

200 W (1 A) or 1000 W (5 A) for 1 ph/3 w

300 W (1 A) or 1500 W (5 A) for 3 ph/4 w

PF: (accur.±0.5 %)

Frequency: (accur.±0.1 %) of span

Energy: (accur.±1 %)

Harmonic: (accur.±1 %) of span

Analog output: Accuracy of assigned measurand or ±0.2 %,

whichever is greater.

Sampling rate: 64 samples per cycle

Data update period:

Harmonic contents and frequency: ≤ 1.1 sec.

Other: ≤ 600 msec.

Response time: ≤ 2 sec. (0 – 99 %),

≤ 3 sec. for frequency and harmonic contents

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 2000 V AC @ 1 minute

(voltage input to current input to discrete input to Modbus

or analog output to discrete output to power)

500 V AC @1 minute for 'External interface' code 7, 8, 9 and

A (between each analog output)

2000 V AC @1 minute (circuits to housing)