INSTALLATION GUIDE

In-line Meter

Know the meter · Wire the right terminals · Choose the right lugs
Guide for 1-phase and 3-phase meters with RS485 communication

1 PHASE

Single Phase

1P · 2-wire
1-phase meter diagram Terminals left to right: Lin Lout Nin Nout. Signal terminals Pulse COM A B sit above the Neutral terminals; A is the white wire, B the black wire. CDM CLOUD DIGITAL METER 000000.00kWh Pulse SINGLE PHASE 50 Hz · Class 1.0 Pulse COM A B Lin IN Lout OUT Nin IN Nout OUT IN ↑ from supply · OUT ↓ to load
L brownN blue
Standard
IEC 62053-21 · IEC 60252-11 · GB/T 17215-008 · PEA · MEA
Display
6 Digit + 2 Decimal
Voltage
200–250 Vac · 50 Hz
Current
Standard 15A(45A), 5A(100A)
Remote Cut-Off 15A(45A)
Prepaid 15A(45A)
Accuracy
Class 1.0
3 PHASE

Three Phase

3P · 4-wire
3-phase meter diagram Terminals left to right: L1in L1out L2in L2out L3in L3out Nin Nout. Signal terminals Pulse COM A B sit above the Neutral terminals; A is white, B is black. Nout is optional depending on the model. CDM CLOUD DIGITAL METER 000000.00kWh Pulse THREE PHASE 50 Hz · Class 1.0 Pulse COM A B L1in IN L1out OUT L2in IN L2out OUT L3in IN L3out OUT Nin IN Nout Optional IN ↑ from supply · OUT ↓ to load Nin must be connected · Nout is optional, depending on the model
L1 brownL2 blackL3 greyN blue
Standard
IEC 62053-21 · IEC 60252-11 · GB/T 17215-008 · PEA · MEA
Display
6 Digit + 2 Decimal
Voltage
200–250 Vac · 50 Hz
Current
Standard 15A(45A)
Standard 5A(100A)
Accuracy
Class 1.0

The specifications and standards listed above are as stated for this model/system, not a verified certification. Select equipment according to the actual model's nameplate and manual.

01

Signal terminals and RS485 network

Terminals above Nin / Nout

Left to right, separate from the power terminals

PulsePulse
COMCommon
AWhite wire
BBlack wire

Signal wires must always be fitted with cord ends

Follow the actual model's manual for Pulse / COM wiring; this picture does not define it.

Recommended cable and when to add a repeater

Signal cableAdd a repeater at
Twisted pair
22 AWG		30 devices or 30 m
Twisted pair + shield
18 AWG		60 devices or 600 m

Whichever comes first. This is a requirement of this system; the real usable distance depends on the equipment and site conditions.

Run the cable as a continuous daisy chain, separate from power cables. Follow the equipment manual for shielding and termination.

02

Cable sizes and lugs

Maximum terminal hole size
Ø 8.6 mm

Terminal hole diameter
This is not the same as the cable cross-section in mm²

IEC01 (THW)

Installation methodCable cross-section
Free air< 25 mm²
Depends on model and load
In trunking35 mm² · lug required
Depends on model and load

Check that the lug fits the hole and tighten to the manufacturer's torque. Never force a cable into the terminal.

03

Breakers for market stalls

Install the stall's 2-pole CB after the meter: Lout and Nout go into the CB per this system's requirement

1-phase single-line diagram: CB after the meter's Lout The brown L wire from the supply enters Lin, leaves Lout to the breaker, then to the load. The blue N wire enters Nin, leaves Nout through the second pole of the ABB S202 to the load. Both L and N pass through the 2-pole breaker (shown with S202.svg). The meter stays powered. Supply1P meterStall CBLoad 000000.00 Powered · online LinLoutNinNout LN Lout → CBN into NinNout → CB → load N Cuts L + N together
Switching off the stall CB → the meter stays online
If power is cut before the meter, the meter loses power and shows offline

1-phase single-line diagram: wires that cross with a gap are not connected. This picture shows where the stall CB goes; it is not a full protection diagram of the installation.

04

Choose the right mounting location for our meter

IP54

Dust-protected to a level that does not affect operation
and protected against water splashing from any direction

Install in a dry, sheltered location

Use a suitable roof or enclosure; avoid direct sun and areas near water. IP54 does not cover immersion or high-pressure water jets.

01 / Keep away from water

Not near taps, washing areas, standing water or flood zones. Never hose it down directly.

02 / Avoid sun and heat

Provide shade and ventilation, keep away from heat sources, and check the temperature range in the manual.

03 / Seal cable entries

Fit all covers and use suitable seals or cable glands. Leave no openings for water or dust.

04 / Mount securely

Mount on a solid surface, away from impact and vibration, with room for inspection and repair.

05 / Separate signal cables

Keep RS485 away from power cables and noise sources, and route cables so they don't pull on the terminals.

06 / Check connections

Check lugs, tightness and covers before energising. Look for signs of overheating at each maintenance round.