KM-N3

Универсальное устройство контроля мощности для монтажа в панель

Удобное решение, простое в монтаже и применении
Одно устройство может контролировать до четырех электрических цепей
Поддерживаются трансформаторы тока общего назначения и электросети различного типа
ЖК-дисплей с крупными, хорошо видимыми цифрами белого и зеленого цвета
Высокая точность измерений (класс 0.5S по IEC) (только устройство контроля мощности)

Ordering Information

Power monitor

Applicable phase wiring methods	Power supply voltage	Dimensions (W×H×D)	Communications	Order Code
Single-phase, 2-wire: 100 to 277 VAC Single-phase, 3-wire: 100 to 240 VAC (L-N) or 200 to 480 VAC (L-L) Three-phase, 3-wire: 173 to 480 VAC (L-L) Three-phase, 4-wire: 100 to 277 VAC (L-N) or 173 to 480 VAC (L-L)	100 to 240 VAC Separate from measurement voltage.	96 × 96 × 64 mm (excluding protrusions)	RS-485 communications, pulse output	KM-N3-FLK

Applicable phase wiring methods

Power supply voltage

Dimensions (W×H×D)

Communications

Order Code

Single-phase, 2-wire:
100 to 277 VAC

Single-phase, 3-wire:
100 to 240 VAC (L-N) or 200 to 480 VAC (L-L)

Three-phase, 3-wire:
173 to 480 VAC (L-L)

Three-phase, 4-wire:
100 to 277 VAC (L-N) or 173 to 480 VAC (L-L)

100 to 240 VAC
Separate from measurement voltage.

96 × 96 × 64 mm
(excluding protrusions)

RS-485 communications,
pulse output

KM-N3-FLK

Note: To use a commercially available current transformer, use a CT with a secondary current rating of 1 A or 5 A, and a rated load of at least 1.0 VA.

Optional products

Item	Remark	Order code
Terminal covers	To be ordered separately. The cover improves protection of terminals	E53-COV24 (3pcs)
Waterproof packing	This waterproof packing is provided with the KM-N3.	Y92S-P10
Mounting adapter	This mounting adapter is provided with the KM-N3.	Y92F-51 (2pcs)

Connectable OMRON split-type Current Transformers (CTs)

Rated primary current	Rated secondary current	Order code
100 A	1 A	KM20-CTN100
250 A		KM20-CTN250
500 A		KM20-CTN500

Note: The CT cables connected to the CT have the following recommended characteristics:
- cross section 0.75 mm² = AWG18
- 2C (number of internal wires is two)
- 1 m long maximum.
The CT cables are not provided by Omron

Specifications

Ratings (Power monitor)


Applicable phase wiring methods		Single-phase two-wire, single-phase three-wire, three-phase three-wire, and three-phase four-wire
Number of measured circuits		Single-phase two-wire: 4 circuits max., Single-phase three-wire or three-phase three-wire: 2 circuits max., Three-phase four-wire: 1 circuit
Power supply voltage (operating frequency)		100 to 240 VAC (50/60 Hz)
Power supply allowable voltage range		85% to 110% of rated power supply voltage
Power consumption		7 VA max.
Input	Rated input voltages	Single-phase, 2-wire: 100 to 277 VAC Single-phase, 3-wire: 100 to 240 VAC (L-N) or 200 to 480 VAC (L-L) Three-phase, 3-wire: 173 to 480 VAC (L-L) Three-phase, 4-wire: 100 to 277 VAC (L-N) or 173 to 480 VAC (L-L)
	Allowable supply voltage range	85% to 115% of rated power supply voltage
	Connectable CTs	General-purpose CT with a rated secondary current of 1 A or 5 A1
	Maximum CT secondary current	6 A
	Rated input frequency	50/60 Hz
Ambient operating temperature		−25 to 55°C (with no condensation or icing)
Ambient operating humidity		25% to 85%
Storage temperature		−25 to 85°C (with no condensation or icing)
Storage humidity		25% to 85%
Operating altitude		2,000 m max.
Installation environment		Overvoltage category II, measurement category II, pollution degree 2
Electromagnetic environment		Industrial electromagnetic environment (EN/IEC 61326-1 Table 2)
Compliant standards		EN 61010-2-030, EN 61326-1, and UL 61010-1 (pending)

Ratings (Connectable OMRON Split-type Current Transformers (CTs))

Item	KM20-CTN100	KM20-CTN250	KM20-CTN500
Rated primary current	100 A	250 A	500 A
Rated secondary current	1 A	1 A	1 A
Rated frequency	50/60 Hz
Insulation resistance	100 MΩ min. (at 500 VDC) (Between through hole and output lead)
Dielectric strength	2,000V AC 1min. (Between through hole and output lead)
Cable length	1 m
Through-hole	24 diameter		36 diameter
Weight	Approx. 210 g		Approx. 500 g
Operating temperature and humidity ranges	−20 to 55 °C, 85% max. relative humidity (with no condensation)
Storage temperature and humidity ranges	−30 to 90 °C, 85% max. relative humidity (with no condensation)

Performance (Power monitor)

Item		KM-N3-FLK
Measured items		Total power consumption (active, regenerative, and reactive), power (active and reactive), current, voltage, power factor, and frequency
Measurement specifications	Active power	0.5% (IEC 62053-22 class 0.5S 2
	Reactive power	2% (IEC 62053-23 class 2) 1
	Sampling cycle	80 ms for 50 Hz and 66.7 ms for 60 Hz
Insulation resistance		(1) Between all electrical circuits and the case: 20 MΩ min. (at 500 VDC) (2) Between all power supply and voltage inputs and all communications and pulse output terminals: 20 MΩ max. (at 500 VDC)
Dielectric strength		(1) Between all electrical circuits and the case: 1,400 VAC for 1 min (2) Between all voltage and current inputs and all communications and pulse output terminals: 2,200 VAC for 1 min
Vibration resistance		Single amplitude: 0.1 mm, Acceleration: 15 m/s2, Frequency: 10 to 150 Hz, 10 sweeps for 8 min each along three axes
Shock resistance		150 m/s², 3 times each in 6 directions (up/down, left/right, forward/backward)
Indications and operation method		LCD indications and operation buttons
Weight		Approx. 350 g (Power Monitor only)
Degree of protection		Front: IP65, Rear case: IP20, Terminal: IP00
Pulse output	Number of outputs	Number of outputs: 4 (photoMOS relay outputs) Used for the total power consumption pulse output.
	Output capacity	50 mA at 40 VDC ON residual voltage: 1.5 V max. (for output current of 50 mA) OFF leakage current: 0.1 mA max.
	Output unit	Output unit: 1, 10, 100, 1k, 5k, 10k, 50k, or 100k (wh) Pulse ON time: 500 ms (Cannot be changed.)
Communications interface	Communications method	RS-485 (2-wire half-duplex with start-stop synchronization)
	Communications protocol	Modbus (RTU): Binary. CompoWay/F: ASCII
	Baud rate	1.2, 2.4, 4.8, 9.6, 19.2, or 38.4 kbps
	Data length	Data length: 7 or 8 bits Stop bits: 1 or 2 bits Vertical parity: Even, odd, or none
	Maximum transmission distance	1,200 m
	Maximum number of connected Power Monitors	Modbus: 99, CompoWay/F: 31 If you measure more than one circuit with one Power Monitor, the number of circuits is treated as the number of connected Power Monitors.
Dimensions (H×W×D)		96 × 96 × 64 mm (excluding protrusions)
Installation method		On-panel installation
Accessories		Instruction Manual and Compliance Sheet, Mounting adapter and waterproof packing