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ADE7752

Polyphase Energy Metering IC with Pulse Output

Analog Devices 

ADE7752/ADE7752A

Figure 21 shows the connections of the analog inputs of the

ADE7752 with the power lines in a 3-phase 3-wire delta service.

Note that only two current inputs and two voltage inputs of the

ADE7752 are used in this case. The real power calculated by the

ADE7752 does not depend on the selected channels.

Ra* Cf

Rb*

VR*

PHASE A

Rb*

CT

VAP

IAP

IAN

ANTIALIASING

FILTERS

SOURCE

PHASE B

PHASE C

CT

VN

Rf

Cf

LOAD

Ra* Cf

Rb*

VR*

ANTIALIASING

FILTERS

Rb*

IBP

IBN

VBP

* Ra >> Rf + VR * Rb + VR = Rf

Figure 21. 3-Phase 3-Wire Meter Connection with ADE7752

Figure 22 shows the connections of the analog inputs of the

ADE7752 with the power lines in a 3-phase 4-wire Wye service.

Ra* Cf

Rb*

VR*

Rb*

CT

ANTIALIASING

FILTERS

VAP

IAP

IAN

PHASE A

SOURCE

PHASE B

PHASE C

Ra* Cf

Rb*

VR*

CT

CT

ANTIALIASING

FILTERS

Rb*

IBP

IBN

VBP

Ra* Cf

Rb*

VR*

Rf

VN

ANTIALIASING

FILTERS

Rb*

ICP LOAD

ICN

VCP

CF

* Ra >> Rf + VR; * Rb + VR = Rf

Figure 22. 3-Phase 4-Wire Meter Connection with ADE7752

Rev. C | Page 16 of 24

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