Basler Electric DECS-100 - Manual (Page 48)

4-14 DECS-100 Installation 9287500991 Rev M
Clamp
Ferrite
Grade
Frequency Range Terminals
2 31 1 MHz – 300 MHz
VM, VMC – Voltage Matching
52L, 52M – Parallel Gen. Compensation
3 31 1 MHz – 300 MHz E1, E2, E3 – Sensing Voltage
4 31 1 MHz – 300 MHz 3, 4, 5 – AC Power Input
5 31 1 MHz – 300 MHz CT1, CT2 – Current Sensing
INSTALLATION FOR EMC COMPLIANCE
The following paragraphs describe the mounting and wiring requirements for an EMC (Electromagnetic
Compatibility) compliant installation.
Protection
Internal DECS-100 protection functions must not be used as the primary form of generator protection.
Mounting
The DECS-100 must be mounted inside a grounded, metal, EMC type enclosure (conduit box) with a
grounded, metal access panel which covers the opening for the DECS-100 front panel display.
Wiring
Wiring connected to the terminals listed below must be shielded. Each shield should be terminated to
ground on the outside of the metal enclosure (conduit box).
• Sensing voltage terminals E1, E2, and E3
• Alarm output terminals AL1 and AL2
• External voltage adjust terminals 6D, 7, and 6U
• Var/Power Factor control contact input terminals 52J and 52K
• Parallel generator compensation terminals 52L and 52M
• Field terminals F+ and F-
• AC power input terminals 3, 4, and 5
• Voltage matching contact input terminals VM and VMC
Ferrite Beads
Install one ferrite clamp, with the properties listed in Table 4–6, on the wires connected to the terminals
listed in the same row with two turns at the enclosure’s exit or inside the enclosure between 1 and 3
inches (25 and 76 mm) from the connector.
Table 4-6. Ferrite Clamp Specifications and Corresponding Wire Terminals
Clamp
Ferrite
Grade
Frequency Range Terminals
1 31 1 MHz – 300 MHz
AL1, AL2 – Alarm outputs
6D, 7, 6U – External Voltage Adjust
52J, 52K – Var/Power Factor Control
2 31 1 MHz – 300 MHz
VM, VMC – Voltage Matching
52L, 52M – Parallel Gen. Compensation
3 31 1 MHz – 300 MHz E1, E2, E3 – Sensing Voltage
4 31 1 MHz – 300 MHz 3, 4, 5 – AC Power Input