JKD250MID - Energy meter HAGER - Free user manual and instructions

Product Type	Split Load Three Phase Multifunction DIN Rail Energy Meter (MID Certified)
Brand	HAGER
Model	JKD250MID (Part Numbers: HGR42EWC for Modbus, HGR42EWMB for Mbus)
Dimensions (Width x Height x Depth)	Approximately 72 mm x 90 mm x 60 mm (4 DIN modules, DIN 43880)
Weight	Less than 210 g
Mounting	Snap-on 35 mm DIN rail
Power Supply	Self supplied from measuring inputs (3 x 100...240 V L-N, 3 x 173...415 V L-L, 50 Hz)
Protection Class	IP20 (terminals), IP54 (front of housing)
Display	High definition white backlit LCD with auto or manual scrolling
Input Type	Three phase four wire via easywire® current transformers (2 x CT inputs)
Rated Voltage	3 x 100...240 V L-N / 3 x 173...415 V L-L
Rated Current Input	2 x easywire® 1 A (330 mV)
Frequency	50 Hz
Energy Accuracy	Class 1 / Class B (IEC/EN62053-21, IEC/EN50470)
Communication	RS485 Modbus or Mbus (depending on variant), plus 2 pulse outputs
Measured Parameters	Voltage (L-L, L-N, average), Current (per phase, average), Power (active, reactive, apparent), Power Factor, Frequency, Energy (active, reactive, apparent), Maximum Demand
Programming	Password protected, user selectable CT/VT ratios, communication settings
Memory Retention	Non-volatile memory for settings and accumulated values
Maintenance	No user-serviceable parts; clean with dry cloth; tamper evident seals
Safety Standards	IEC/EN61010, IEC/EN62053-31; overvoltage category III, pollution degree 2
Regulatory Approvals	MID (2014/32/EU), IEC/EN50470, EMC compliant

Frequently Asked Questions - JKD250MID HAGER

What is the HAGER JKD250MID energy meter used for?

The JKD250MID is a MID certified split load three phase energy meter designed for monitoring energy consumption and other electrical parameters in industrial and commercial applications, especially for billing purposes.

Does the meter require a separate auxiliary power supply?

No, it is self-supplied directly from the measuring voltage inputs (3 x 100-240 V L-N / 173-415 V L-L).

How many current transformer (CT) inputs does the meter have?

The meter has two independent CT inputs for easywire® current transformers, allowing split load monitoring (e.g., lighting and power circuits).

What communication options are available?

Two versions exist: one with RS485 Modbus and two pulse outputs (HGR42EWC), and another with Mbus and two pulse outputs (HGR42EWMB).

Can the CT and VT ratios be programmed?

Yes, the CT primary current (5-6000 A) and VT primary voltage (100-600 V) are independently programmable for each load through the password-protected menu.

What is the maximum number of meters that can be daisy-chained?

Up to 32 meters can be connected on the RS485 bus without a repeater (up to 255 with a repeater), and the voltage OUT connector allows daisy-chaining up to 32 meters from one supply.

What parameters are displayed on the LCD?

The white backlit LCD shows voltage (L-L, L-N, average), current (per phase and average), power (active, reactive, apparent), power factor, frequency, energy, and maximum demand values.

Is the meter suitable for outdoor installation?

The meter has an IP54 front and IP20 terminals, making it suitable for indoor use or protected outdoor environments. Avoid direct exposure to rain or condensation.

How do I reset the energy or maximum demand readings?

Through the programming menu (password protected), you can reset active, reactive, apparent energy and maximum demand values individually. Note that after 15 minutes in programming mode, further adjustments are locked without factory return.

Can the meter be used for sub-metering in split-load panels?

Yes, the split load design with two independent CT inputs makes it ideal for monitoring separate loads (e.g., lighting and power) within the same panel, with total and per-load energy readings.

USER MANUAL JKD250MID HAGER

Split Load Three Phase easywire® Multifunction DIN Rail Energy Meter (MID Certified)

● Four module DIN rail mounted
● Energy pulse LED / High definition white backlit LCD display
- 2 x Inputs from easywire® Current Transformers
● Three phase network compatible
● Independently programmable CT ratios (Load 1 and Load 2)
● Programmable voltage transformer ratio
● True RMS measurement
- MID B+D Certified
● Simple programming & operation / auto or manual page scrolling
● 2 x Pulse outputs and Modbus communication or Mbus
● Voltage OUT connector for daisy-chaining up to 32 meters from one supply

MID

Product Description

The HGR42EW series is part of the easywire ^® family of meters, designed to save up to 90% installation time compared to a standard meter and current transformer installation.

The meters contain two 3 Phase metering circuits in one case, and accept inputs from two separate easywire ^® 3 Phase current transformers while still utilizing the same voltage reference.

This MID approved, 4 module DIN rail mounted multifunction energy meter, is suitable for monitoring energy consumption and other electrical parameters in industrial and commercial applications. This series is particularly suited for use in split-load lighting and power boards, in three phase applications, and have been certified for billing purposes.

A high efficiency white backlit LCD display provides a clear indication of measured values in all light conditions. Front push-buttons allow user access to the display page required. The meter is available in two versions:-

• With two pulse outputs and RS485 Modbus communication.
• With two pulse outputs and Mbus communication

MID APPROVED FOR BILLING APPLICATIONS Measuring Instruments Directive

Displayed Parameters

Voltage - L-L, L-N and average

Current - Per phase and average (LOAD 1 and LOAD 2)

Power Factor - per phase and average

Frequency

Power - Active, Reactive and Apparent (per phase and total)

Power Max. demand - Active and apparent power.

Energy - Active, reactive and apparent (per load and total)

Communications Part Number
Split Load Input with RS485 Modbus Output and Two Pulse Outputs kWh (1 per circuit)	HGR42EWC
Split Load Input with Mbus Output and Two Pulse Outputs kWh (1 per circuit)	HGR42EWMB

Display

Display Type LCD, high definition with white back-light
Digit height 6.35mm (displayed parameter)
Page scrolling Manual by front key / or auto scroll mode
Displayed parameters and accuracies Voltage 0.5%	of full scaleCurrent 0.5% of full scaleFrequency 0.1% of full scale (L-N >20V)Power factor 1% of unityActive power 1%Reactive power 1%Apparent power 1%Active Energy Class 1, Class B (IEC/EN62053-21, IEC/EN50470)Reactive Energy Class 2 (IEC/EN62053-23)
Energy maximum display	9999999
Resolution	0.01K, 0.1K, 1K, 0.01M, 0.1M (depending on CT ratio & VT ratio)

Programming

Parameters that can be changed using programming menuNOTE: Once Programming Mode Is entered The values in red will be locked out after 15 Mins. No further adjustment is possible without return to factory.	CT Primary currentVT primary voltageVT secondary voltageCommunication addressCommunication speed (Baud)Communication ParityCommunication number of stop bitsBack-light time-out periodDemand period (for integration)Pulse durationPulse output (kWh)Reset to Factory DefaultReset Energy and Maximum DemandReset Active EnergyReset Reactive EnergyReset Apparent EnergyReset Maximum CurrentReset Maximum Active PowerReset Minimum Active PowerReset Maximum Reactive PowerReset Minimum Reactive PowerReset Maximum Apparent Power
Programming access	Password protected (user selectable)
Memory retention	Non volatile memory

Input

Connection Three phase four wire
Input voltage range 3 x 100...240V (L - N),	3 x 173...415V (L - L)
Voltage Rated Burden <8VA
Nominal current input 2 xeasywire	^ - 1A (330mV)
Max current (Imax)easywire	^ - 1.2A (396mV)
Current Rated Burden N/A -easywire	^ input
Starting current 2mA (0.66mV)
Short time overcurrent 30 x Imax to IEC/EN62053-21 - 23
Impulse voltage withstand 6kV 1.2/50μS 0.5J
AC voltage withstand 4kV 50Hz for 1 min
CT primary current 5...6000A
VT primary voltage 100...600V
Frequency 50Hz
Current distortion factor According to IEC/EN50470

Auxiliary Supply

Voltage range	Self supplied from measuring input
Operating frequency See input section
Power consumption	See input section

Outputs

Energy pulses
Number of pulse outputs	2
Pulse output function	kWh
Pulse output type	1
Pulse output Max. current	100mA
Pulse output voltage range	5...27VDC
Pulse duration	100ms...2s
Pulse resolution	0.01K, 0.1K, 1K, 0.01M, 0.1M (depending on CT ratio & VT ratio)
Communication - Modbus Version
Communication type RS485
Communication protocol	Modbus
Address	1...255
Number of bits	8bits
Parity	None, odd, even
Baud rate	300, 600, 1200, 2400, 4800, 9600, 19200
Required response time to request	≤100ms
Number of meters connected on the bus	32 (up to 255 with RS485 repeater)
Max distance from Master device	500M

Insulation

Installation category III
Pollution degree 2
Insulation voltage rating 300V (L-N)

Environmental Conditions

Reference temperature 23°C ±2°C
Specified temperature operating range -10°C...+55°C
Storage temperature -20°C...+75°C
Relative humidity 0...85%, non condensing
Mechanical environment M1
Electromagnetic environment E2

Mechanical

Housing
Housing 4 module DIN 43880
Mounting Snap-on 35mm rail
Tamper sealing	Meter housing (by means of a tamper evident seal). Sealable terminal covers.
Housing material	Self-extinguishing polycarbonate (UL94 V-0)
Protection degree (IEC/EN60529)	IP20 (terminals), IP54 (front of housing)
Weight	<210g
Termination
Current input terminal type	2 x RJ45
Max. wire size	N/A
Voltage input terminal type	Pluggable terminal block - Screw clamp type
Max. wire size	2.5mm^2
Voltage output terminal type	Pluggable terminal block - Screw clamp type
Max. wire size	2.5mm^2
Communication output (RS485 and Pulse)	Pluggable terminal block - Screw clamp type
Max. wire size	1.5mm^2

Conformity

Electromagnetic compatibility	IEC/EN61326-1, IEC/EN55011 Class A, IEC/EN61000-4-2, -3, -4, -5, -6, -8, -11IEC/EN50470-1/3
Accuracy and functionality	IEC/EN50470-1/3, IEC/EN62053-21, IEC/EN62053-23, DIRECTIVE 2014/32/EU
Safety	IEC/EN61010, IEC/EN62053-31

Wiring Diagrams

Note: # All fuse types : Class CC UL type fast acting 600V

Max. 3A (Actual rating is dependent on the number of meters connected to the voltage supply and must be determined during system design).

3 Phase 4 Wire - 2 CT

graph TD
    A["CT Input"] --> B["RS485 NC PULSE OUTPUT"]
    B --> C["Voltage I/P"]
    B --> D["Voltage OP"]
    C --> E["L1"]
    D --> F["L2"]
    E --> G["LOAD"]
    F --> G
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#ffc,stroke:#333
    style F fill:#cfc,stroke:#333
    style G fill:#fcc,stroke:#333

Dimensions

Model Selection Table

Communications Part Number
Split Load Input with RS485 Modbus Output and Two Pulse Outputs kWh (1 per circuit)	HGR42EWC
Split Load Input with Mbus Output and Two Pulse Outputs kWh (1 per circuit)	HGR42EWMB