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ADE7762

Polyphase Energy Metering IC with Phase Drop Indication

Analog Devices 

Preliminary Technical Data

Figure 22 shows the connections of the ADE7762 analog inputs

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

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 22. 3-Phase 3-Wire Meter Connection with ADE7762

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

ADE7762 are used in this case. The active power calculated by

the ADE7762 does not depend on the selected channels.

ADE7762

Figure 23 shows the connections of the ADE7762 analog inputs

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

Ra* Cf

Rb*

VR*

VA P

IAP

Rb*

CT

IAN

ANTIALIASING

FILTERS

PHASE A

SOURCE

PHASE B

PHASE C

Ra* Cf

Rb*

VR*

CT

CT

ANTIALIASING

Rb*

FILTERS

IBP

IBN

VBP

Ra* Cf

Rb*

VR*

Rf

VN

ANTIALIASING

FILTERS

Rb*

ICP LOAD

ICN

VCP

CF

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

Figure 23. 3-Phase 4-Wire Meter Connection with ADE7762

Rev. PrB | Page 17 of 28

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