MODEL: 53U
Load resistance: ≤ 270 Ω
*2. Accuracy level:
Measurands converted into analog output: Voltage, Current,
Active / reactive / apparent power, Power factor, Frequency,
Harmonic contents
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:
■ DC Voltage: 1 – 5 V DC
Load resistance: ≥ 5000 Ω
Harmonic contents and frequency: ≤ 1.1 sec.
Other: ≤ 600 msec.
Measurands converted into analog output: Voltage, Current,
Active / reactive / apparent power, Power factor, Frequency,
Harmonic contents
Response time: ≤ 2 sec. (0 – 99 %),
≤ 3 sec. for frequency and harmonic contents
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength:
■ 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
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)
Measurands applicable to alarm: Voltage, current, current
intervals, neutral current, frequency, energy, energy
intervals
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
(ON delay, deadband and other parameters are selectable)
Measurands applicable to count: Energy;
Pulse rate selectable within
(between each contact output except for External Interface
code 8)
0.1 – 10 000.0 kWh/p, kvarh/p, kVAh/p
2000 V AC @1 minute (circuits to housing)
INSTALLATION
Power consumption
STANDARDS & APPROVALS
EU conformity:
•AC: < 8 VA
•DC: < 4 W
EMC Directive
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)
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
PERFORMANCE
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
Accuracy (at 23°C ±10°C or 73.4°F ±18°F, 45 – 65 Hz)
Voltage: ±0.3 % (±0.2 % for Option /H)*1
Current: ±0.3 % (±0.2 % for Option /H)*1
Power: ±0.5 %*1
Approval:
Power factor: ±0.5 %
UL/C-UL general safety requirements
(UL 61010-1, CAN/CSA-C22.2 No.61010-1)
Frequency: ±0.1 %*1
Energy: ±1 % (±0.5 % for Option /H*2
)
Harmonic contents: ±1 %*1
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.
53U SPECIFICATIONS
ES-6485 Rev.26 Page 3/9
https://www.m-system.co.jp/
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