MODEL: 53U

53U SPECIFICATIONS

ES-6485 Rev.26 Page 3/9

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

Load resistance: ≤ 270 Ω

Measurands converted into analog output: Voltage, Current,

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

Harmonic contents

■ DC Voltage: 1 – 5 V DC

Load resistance: ≥ 5000 Ω

Measurands converted into analog output: Voltage, Current,

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

•DC: < 4 W

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

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

Operating humidity: 90 % RH max. (non-condensing)

Mounting: Panel flush mounting

Weight: 300 g (0.66 lb)

PERFORMANCE

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

Power factor: ±0.5 %

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

whichever is greater.

*1. Percentage of the spans:

480 V for voltage;

1 A or 5 A for current; and

4155 W (5 A) or 831 W (1 A) for active power

The described accuracy levels are ensured at the input 1 %

or more for phase 2 current with 3-phase/3-wire unbalanced

load, for neutral current with 3-phase/4-wire unbalanced

load, and neutral current with 1-phase/3-wire.

*2. Accuracy level:

Active energy class 0.5S according to IEC 62053-22

(Reactive energy class 2 according to IEC 62053-23)

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:

4000 V AC @1 minute

(voltage input or current input or contact input or contact

output or Modbus or configurator jack or analog output to

power)

2500 V AC @1 minute

(voltage input to current input to contact input to contact

output to Modbus or configurator jack or analog output)

2000 V AC @1 minute

(between each contact output except for External Interface

code 8)

2000 V AC @1 minute (circuits to housing)

STANDARDS & APPROVALS

EU conformity:

EMC Directive

EMI EN 61000-6-4

EMS EN 61000-6-2

Low Voltage Directive

EN 61010-1

Measurement Category III (input)

Installation Category II (power)

Pollution Degree 2

Input to auxiliary power: Reinforced insulation (550 V)

Output to auxiliary power: Reinforced insulation (300 V)

Input to output: Basic insulation (550 V)

RoHS Directive

Approval:

UL/C-UL general safety requirements

(UL 61010-1, CAN/CSA-C22.2 No.61010-1)