BENSHAW ENHANCED KEYPAD Technické informace stáhnout pdf (Strana 105)

7 – TROUBLESHOOTING

7.1.6 Metering incorrect

Condition Cause Solution

CTs installed or wired incorrectly. Verify correct CT wiring and verify

that the CTs are installed with all the

White dots towards the input line

side.

CT ratio parameter (P68/FUN03) set

incorrectly.

Verify that the CT ratio parameter is

set correctly.

Power Metering not reading

correctly.

Burden switches set incorrectly. Verify that the burden switches are

set correctly.

PF Meter not reading correctly. CTs installed or wired incorrectly. Verify correct CT wiring and verify

that the CTs are installed with all the

White dots towards the input line

side.

Energy Saver active. Turn off Energy Saver if not desired.

Loose connections. Shut off all power and check all

connections.

SCR fault. Verify that the SCRs gate leads are

connected properly and the SCRs are

ok.

Load actually is not steady. Verify that the load is actually steady

and that there are not mechanical

issues.

Motor Current or Voltage meters

fluctuating with steady load.

Other equipment on same power feed

causing power fluctuations and/or

distortion.

Fix cause of power fluctuations

and/or distortion.

Voltage Metering not reading

correctly.

In medium voltage systems, Rated

Voltage parameter (P66/FUN05) set

incorrectly.

Verify that Rated Voltage parameter

is set correctly.

CT ratio parameter (P68/FUN03) set

incorrectly.

Verify that the CT ratio parameter is

set correctly.

Burden switches set incorrectly. Verify that the burden switches are

set correctly.

Current Metering not reading

correctly.

CTs installed or wired incorrectly. Verify correct CT wiring and verify

that the CTs are installed with all the

White dots towards the input line

side.

CT ratio parameter (P68/FUN03) set

incorrectly.

Verify that the CT ratio parameter is

set correctly.

Burden switches set incorrectly. Verify that the burden switches are

set correctly.

Ground Fault Current Metering not

reading correctly.

CTs installed or wired incorrectly. Verify correct CT wiring and verify

that the CTs are installed with all the

White dots towards the input line

side.

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