CAT C32 - Page 41

Technical CATERPILLAR – 1000 kVA Page 41
Description UTILITY POWER MODULE
Revision 1.0 1 May 2006
Listing of available monitoring and protective functions
- Generator over current ANSI 50/51
- Neutral earth current ANSI 50/51 * Subjected to optional CT
- Generator current imbalance ANSI 46G
- Generator under voltage ANSI 27G
- Generator over voltage ANSI 59 G
- Generator voltage imbalance ANSI 18 G
- Generator leading power factor
- Generator lagging power factor
- Generator under frequency ANSI 81 U/G
- Generator over frequency ANSI 81 O/G
- Generator reverse power ANSI 32 G
- Generator overload ANSI 32 O/G
- Busbar under voltage ANSI 27
- Busbar over voltage ANSI 59
- Busbar voltage imbalance ANSI 18
- Busbar under frequency ANSI 81 U
- Busbar over frequency ANSI 81 O
Technical description
CAN NETWORK
2 CAN connections can be used to retrieve data. CAN 1 is used to get data at high sample
rate. CAN2 is used to get all other data. The bit rate at CAN1 needs to be the same as the bit
rate from all I/O modules (default 500kBit) The bit rate at CAN2 needs to be the same as set-
up for CAN-COM interface cards (by default 500kBit).
CAN1 address is 1 for the first Power organiser that is connected to the network. Address is
2 if a second Power organiser is added. This is similar as used when setting up addresses for
I/O card. First digital input card will have address 1, second digital input card will have
address 2 etc.
CAN2 address is by default 1, (please check drawing to confirm). It is important that all nodes
connected at CAN2 network do have a unique node address.
All current measuring is implemented via internal CT’s.
Current sensing
Nominal measuring current 5 A
Maximal current (< 0,1 sec) 100 A
Input impedance < 0,1 Ohm
Power consumption 5 VA
Voltage sensing (AC)
Barrier strip connector rated to 600V Line to Line
Nominal voltage 420 Volt
Maximal voltage continuous 500 Volt
Maximum voltage < 0,1sec 4000 Volt