Chapter 3—Operation

63230-300-212

Performing a Wiring Check

April 2001

 

 

DANGER

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION

Turn off all power supplying the circuit monitor and the equipment in which it is installed before working on it.

Use a properly rated voltage testing device to verify that the power is off.

Never short the secondary of a PT.

Never open circuit a CT; use the shorting block to short circuit the leads of the CT before removing the connection from the circuit monitor.

Failure to follow this instruction will result in death or serious injury.

8.Correct the wiring errors.

9.Repeat these steps until all errors are corrected.

Table 3–12: Wiring Error Messages

Message

Description

 

 

Invalid system type

The circuit monitor is set up for a system type that the wiring test

does not support.

 

 

 

Frequency out of range

Actual frequency of the system is not the same as the selected

frequency configured for the circuit monitor.

 

 

 

Voltage not present on all phases

No voltage metered on one or more phases.

 

 

Severe voltage unbalance present

Voltage unbalance on any phase greater than 70%.

 

 

Not enough load to check wiring

Metered current below deadband on one or more phases.

 

 

Suspected error: Check meter configuration for direct connection

Set up for voltage input should be “No PT.”

 

 

Suspected error: Reverse polarity on all current inputs

Check polarities. Polarities on all CTs could be reversed.

 

 

Phase rotation does not match meter setup

Metered phase rotation is different than phase rotation selected in

the circuit monitor set up.

 

 

 

Negative kW, check CT & VT polarities

Metered kW is negative, which could indicate swapped polarities

on any CT or VT.

 

 

 

No voltage metered on V1–n

No voltage metered on V1–n on 4-wire system only.

 

 

No voltage metered on V2–n

No voltage metered on V2–n on 4-wire system only.

 

 

No voltage metered on V3–n

No voltage metered on V3–n on 4-wire system only.

 

 

No voltage metered on V1–2

No voltage metered on V1–2.

 

 

No voltage metered on V2–3

No voltage metered on V2–3.

 

 

No voltage metered on V3-1

No voltage metered on V3-1.

 

 

V2–n phase angle out of range

V2–n phase angle out of expected range.

 

 

V3–n phase angle out of range

V3–n phase angle out of expected range.

 

 

V2–3 phase angle out of range

V2–3 phase angle out of expected range.

 

 

V3–1 phase angle out of range

V3–1 phase angle out of expected range.

 

 

Suspected error: Reverse polarity on V2–n VT

Polarity of V2–n VT could be reversed. Check polarity.

 

 

Suspected error: Reverse polarity on V3–n VT

Polarity of V3–n VT could be reversed. Check polarity.

 

 

Suspected error: Reverse polarity on V2–3 VT

Polarity of V2–3 VT could be reversed. Check polarity.

 

 

48

© 2001 Schneider Electric All Rights Reserved

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Schneider Electric 4000 manual Wiring Error Messages, Message Description