
Installation
45
4.1.6 MAINS CURRENT TRANSFORMERS
WARNING!: Do not disconnect this plug when the CTs are carrying current.
Disconnection open circuits the secondary of the C.T.’s and dangerous voltages may then
develop. Always ensure the CTs are not carrying current and the CTs are short circuit
connected before making or breaking connections to the module.
NOTE: The module has a burden of 0.5 V A on the CT. Ensure the CT is rated for the
burden of the controller, the cable length being used and any other equipment sharing the
CT. If in doubt, consult the CT supplier.
NOTE: Take care to ensure correct polarity of the CT primary as shown below. If in doubt,
check with the CT supplier.
NOTE: DO NOT CONNECT terminals 54, 56 and 57 as they are not applicable.
Pin
No
Description
Cable
Size
Notes
51
CT Secondary for L1
2.5mm²
AWG 13
Connect to s1 secondary of L1 monitoring CT
52
CT Secondary for L2
2.5mm²
AWG 13
Connect to s1 secondary of L2 monitoring CT
53
CT Secondary for L3
2.5mm²
AWG 13
Connect to s1 secondary of L3 monitoring CT
54
-
DO NOT CONNECT: Not applicable
55
CT Common
2.5mm²
AWG 13
Connect to s2 secondary of L1, L2 & L3 CTs and to a good clean earth
point.
56
CT Secondary for
Bus/Load CT
-
DO NOT CONNECT: Not applicable
57
CT Secondary for
Bus/Load CT
-
DO NOT CONNECT: Not applicable
4.1.6.1 CT CONNECTIONS
p1,
k
or K is the primary of the CT that ‘points’ towards the Mains
p2,
l
or L is the primary of the CT that ‘points’ towards the Load
s1 is the secondary of the CT that connects to the DSE Module’s input for the CT measuring
s2 is the secondary of the CT that should be commoned with the s2 connections of all the other CTs
and connected to the CT common terminal of the module.
TO MAINS
TO LOAD
POLARITY OF CT PRIMARY
Labelled as
p1,
k
or K
Labelled as
p2,
l
or L
Содержание DSE8661
Страница 11: ...Specification 11...
Страница 52: ...Installation 52 4 2 1 TYPICAL SYSTEM DIAGRAM NOTE The DSE8661 module does NOT support multiple mains systems...
Страница 53: ...Installation 53 4 2 2 TYPICAL WIRING DIAGRAM 3 PHASE 4 WIRE STAR 4 2 2 1 MODULE INTER CONNECTION RS485 TO RS485...
Страница 54: ...Installation 54 4 2 2 2 MODULE INTER CONNECTION DSENET TO RS485...
Страница 55: ...Installation 55 4 2 3 ALTERNATE TOPOLOGIES 4 2 3 1 SINGLE PHASE 2 WIRE...
Страница 56: ...Installation 56 4 2 3 2 2 PHASE L1 L2 3 WIRE DELTA...
Страница 57: ...Installation 57 4 2 3 3 2 PHASE L1 L3 3 WIRE DELTA...
Страница 58: ...Installation 58 4 2 3 4 3 PHASE 3 WIRE DELTA...
Страница 59: ...Installation 59 4 2 3 5 3 PHASE 4 WIRE DELTA...
Страница 84: ...Operation 84 6 1 2 STOPPING THE GENERATOR Select Stop Reset mode The generator is requested to stop...
Страница 97: ...Operation 97 6 7 MULTIPLE MAINS OPERATION NOTE The DSE8661 module does NOT support multiple mains systems...
Страница 120: ...This Page is Intentionally Left Blank 120...