INSTALLATION GUIDE

E-Power EP96

3-phase Panel Meter · Choose the right CT · Configure correctly · Check before handover

3 PHASE / PANEL MOUNT

Measures everything, easy to read, configure it right

Illustration of the 3-phase Panel Meter showing voltage, current and powerE-POWER EP96V L1–N230.0A L1100.0L1 L2 L3 kWSVG illustration · screen values are examples

E-Power EP96 device data

OEM base model: ATZ2000
Manufacturer: Hangzhou Antin Power Technology Co., Ltd.
Sold under the E-Power brand as model EP96

HarmonicItem 63

+ Subharmonic

AccuracyClass 0.5S
ProtectionEMC Level 4
Surge4 kV
NetworkRS485

Modbus RTU
38400 bps

Nodes64 Devices
Overload20×

0.5 s

The meter class is not the accuracy of the whole set; the CT/VT, wiring and burden must be considered together.

01

Panel cut-out and mounting

Cut-out 92 × 92 mm, meter face 96 × 96 mm, depth 75 mm
92 × 92 mm

Cut-out size as shown

Meter face 96 × 96 mm · depth 75 mm

Deburr the cut-out, fit the clips firmly, and leave room behind for terminals, cables and maintenance.

Check clearances and panel thickness in the actual model's manual; the picture does not give cut-out tolerances.

02

Get all 3 parts right

1 / Meter

Set 3P3W/3P4W to match the site, and set the CT primary/secondary and VT ratio to the actual equipment.

Select the 1A/5A input to match the CT. Check the input voltage and auxiliary supply before energising.

2 / CT cable

Use copper cable sized and routed to suit the burden. Run S1/S2 as a pair, label each phase and fit suitable lugs.

Count the round-trip length, check the terminals and use a shorting terminal for meter removal.

3 / CT

YHDC SCT024TS
Split core · 100A/5A · Accuracy 1%
Cable window Ø24 mm · reference burden 0.5 VA

Meter setting: CT primary 100 A / secondary 5 A (current ratio 20:1). Check the actual nameplate and VA before use.

Choose a primary current that suits the load, and a secondary 1A/5A, VA and accuracy class that suit the job.

The CT window must fit the actual cable/busbar. Check the insulation rating and the P1 → P2 direction.

Simplified CT circuit of the 3-phase meterEach phase passes through its own CT from P1 (supply side) to P2 (load side). S1 and S2 go through a shorting terminal to the matching current input pair of the meter, with no cross-phase connections.SupplyTo load →Shorting terminalE-POWER EP96 L1P1P2S1S2I1+ / S1I1− / S2 L2P1P2S1S2I2+ / S1I2− / S2 L3P1P2S1S2I3+ / S1I3− / S2 Current inputs only · see the actual model's manual for voltage / auxiliary supply / RS485 terminals

On mobile, scroll the picture left–right to see all terminals. Secondary wire colours in the picture only tell the lines apart; they are not the model's colour code.

03

CT cable length and size calculator

Calculated per CT / per phase for a 1A or 5A secondary with two equal copper conductors. The length you enter is the one-way distance from the CT to the meter

E-Power EP96: uses 0.1 VA from the ME96SSRA-MB at 5A for estimation only; this is not a confirmed E-Power EP96 burden spec.

Reference modelCurrent input burdenCondition
Schneider PM2230 / PM2200< 0.024 VAAt 6A · 0.024 VA used to estimate the 5A side
Not scaled down by I² without confirmed data
Mitsubishi ME96SSRA-MB0.1 VA per phaseAt 5A · the sub-model called ME96mk2 is not yet confirmed

Only the current-input value is used, never the VA of the voltage or auxiliary circuits. Both reference values limit the choice to a 5A secondary; for 1A, enter the actual model's confirmed data.

The reference CT is 5A only. The 1A option is for calculating other CTs; it does not change the SCT024TS 100A/5A output. At 5A / 2.5 mm² / 20°C the burden-limited maximum length, before adding the meter and terminals, is about 1.43 m.

Rloop = 2 × L × 0.0175 × [1 + 0.00393 × (T − 20)] / S
Cable VA = Isecondary² × Rloop · Total VA = cable VA + meter VA + other VA

Uses the approximate resistivity of copper at 20°C. The result screens the maximum burden only and does not certify the accuracy class: check the manufacturer's rated burden range, the power factor and the actual cable resistance. Not for aluminium cable, shared return conductors or mV/Rogowski CTs.

Reference table: copper cable, 10 m one way, at 20°C

Cable sizeR round tripCable burden at 1ACable burden at 5A

Example 10 m / 2.5 mm²: cable burden about 0.14 VA at 1A or 3.50 VA at 5A For the SCT024TS 100A/5A 1% rated at 0.5 VA, a 10 m / 2.5 mm² cable already exceeds the rating, even before adding the meter and terminals.

The default CT value of 0.5 VA comes from the SCT024TS 100A/5A Accuracy 1% datasheet as a typical value; confirm it against the nameplate/documents of the installed unit. The default meter burden is a reference value: replace it with the value from the ATZ2000 OEM manual by Hangzhou Antin Power Technology Co., Ltd. once confirmed, and make it match the selected secondary current.

04 Configure, check and calibrate04Configure, check and calibrate Calibrate the meter and CT with a constant load onlyUse a constant load and a calibrated reference instrument. Check the wiring and ratio before adjusting. Record before/after results and load conditions, following the procedure the manufacturer allows.Site requirement: calibrate meter + CTconstant load onlyConstant load + calibrated reference instrumentCheck wiring and ratio before adjustingRecord before/after results with load conditionsFollow the manufacturer's permitted procedure
Match the phasesCT L1 ↔ voltage L1 · CT L2 ↔ voltage L2 · CT L3 ↔ voltage L3 · check phase sequence and power directionL1L2L3V1V2V301 / Match the phasesCT L1 ↔ voltage L1CT L2 ↔ voltage L2CT L3 ↔ voltage L3Check phase sequence and power directionCheck polarityP1 supply side → P2 load side · S1 / S2 match the meter inputs · check against the actual model's manual before energisingP1P2S1S202 / Check polarityP1 supply side → P2 load sideS1 / S2 match the meter inputsCheck against the actual model's manual before energisingSet the CT / VT ratioSet primary / secondary from the nameplate · this CT: 100 A / 5 A = 20:1 · no VT: check the direct-input setting · record the actual settings before handoverCT PRIMARY 100ASECONDARY 5ARATIO 20:103 / Set the CT / VT ratioSet primary / secondary from the nameplateThis CT: 100 A / 5 A = 20:1No VT: check the direct-input settingRecord the actual settings before handoverSet RS485 to match the system38400 bps · Modbus RTU · matching parity / stop bits · unique addresses · continuous bus · termination per the device manualID 01ID 02ID 0304 / Set RS485 to match the system38400 bps · Modbus RTUMatching parity / stop bitsUnique addresses · continuous busTermination per the device manualCheck ratings and accuracyCT suits the operating load range · check the VA and class of the measuring set · 20× / 0.5 s is an overload rating · not a continuous ratingLOAD / VA / CLASS05 / Check ratings and accuracyCT suits the operating load rangeCheck the VA and class of the measuring set20× / 0.5 s is an overload ratingNot a continuous ratingTest the real systemCompare V / I / kW / PF with a reference instrument · test Modbus reading · check settings after power returns · record before/after results and load conditions230.0230.0REFERENCE06 / Test the real systemCompare V / I / kW / PF with a reference instrumentTest Modbus readingCheck settings after power returnsRecord before/after results and load conditions
05

Always record before handover

Record the CT ratio and VT ratio with evidence of the actual settings in the meter

Site / panel / meter no.: __________________
Date / configured by / checked by: __________________
CT primary / secondary: __________ A / ______ A
VT primary / secondary: __________ V / ______ V
CT model / VA / class / window: __________________
CT cable size / one-way length: ______ mm² / ____ m
Modbus address / baud / parity / stop: __________
Reference load / instrument / before–after: __________

Attach photos of the CT/VT nameplates, the ratio settings screen and the measurement results. If there is no VT, record “Direct input / no VT” with the actual setting.