Table of Contents
Advertisement
2.8 Wiring Configurations
The
WIRING MODE
configuration. The wrong wiring mode may result in incorrect readings.
There are seven possible wiring configuration s :
No.
1
3-wire direct connection using 2 CTs (2-element)
2
3-wire open delta connection using 2 PTs, 2 CTs (2-element)
3
3-wire open delta connection using 2 PTs, 3 CTs (2 ½-
element)
4
4-wire WYE direct connection using 3 CTs (3-element)
5
4-wire delta direct connection using 3 CTs (3-element)
6
4-wire WYE connection using 3 PTs, 3 CTs (3 element)
7
4-wire WYE connection using 2 PTs, 3 CTs (2 ½-element)
In 4-wire configurations, '4Ln3' or '3Ln3' wiring modes represent line-to-neutral
voltage readings; '4LL3' or '3LL3' wiring modes represent line-to-line voltages.
For 3-wire configurations, voltage readings will always represent line-to-line
voltages. These do not affect readings for harmonic voltages (see Section 2.7).
18
must be set in the instrument in accordance with the wiring
Wiring Configuration
Wiring Mode
3DIR
3OP2
3OP3
4Ln3 or 4LL3
4Ln3 or 4LL3
4Ln3 or 4LL3
3Ln3 or 3LL3
Installation
Advertisement
Table of Contents
