Transcript IMO - Metering

IMO Audit Findings - IT’s
IMO Audit Findings - IT’s
• As per Market Rules, IT’s must be Measurement Canada
approved or operating under Measurement Canada
Temporary Permit - which expires May 1, 2004
• IT’s must be operating on the MC approved tap and within
the burden and rating factor limits
• Number of installations consisting of MC approved IT’s but
not operating on the MC approved tap. IT’s listed on MC
Temp Permit.
• Number of installations have non MC approved IT’s and are
not listed on the MC Temporary Permit. Subject to
compliance.
IMO Audit Findings - IT’s
• Meter installation consists of distribution transformers for
VT’s (non MC approved and no accuracy rating).
– May or may not be on MC Temp Permit
– In some cases, distribution transformers are also used as station
service transformers.
• Auto transformers used in CT circuits of some meter
installations.
• Unable to determine IT accuracy in some cases.