General Data; Identifier Settings; Current Transformer (Ct) Configuration Settings; Phase Rotation, Nominal Frequency Settings - Siemens SIMPRO-100 Instruction Manual

SIMPRO-100
4.3

General Data

4.3.1

Identifier Settings

All models of the SIMPRO-100 Relay have the
following identifier settings:
Setting Prompt Setting Range
Relay Identifier 20 Characters
Terminal Identifier 20 Characters
Table 4.2 Identifier Settings
The SIMPRO-100 Relay prints the Relay and
Terminal Identifier strings at the top of responses
to serial port commands to identify messages
from individual relays. Enter up to 20 characters,
include capital letters A – Z, numbers 0 – 9,
periods (.), dashes (-), and spaces. Suggested
identifiers include the location, process, circuit,
size, or equipment number of the protected
motor.
4.3.2 Current Transformer (CT)
Configuration Settings
Setting Prompt
Phase (IA, IB, IC) CT Ratio
Phase CT Secondary
Rating
Neutral (IN) CT Ratio
Neutral CT Secondary
Rating
Table 4.3 CT Configuration Settings
The CT ratio and secondary rating settings
configure the relay to accurately scale measured
values and report the primary quantities.
Calculate the phase and neutral CT ratios by
dividing the primary rating by the secondary
rating.
PRIM-2400C
Setting Name =
Factory Default
RID = SIMPRO-100
TID = Motor Relay
Setting Setting Name =
Range Factory Default
1 – 6000 CTR = 100
1, 5 A ITAP = 5
1 – 6000 CTRN = 100
1, 5 A INTAP = 5
Example: Phase CT Ratio Setting Calculation
Consider an application where the phase
CT ratios are 600:5.
Set CTR = 600/5 = 120
Set ITAP = 5 A
Select phase current transformers for your
application so that the primary current rating is
equal to or greater than the motor full load
current. Full load current should not be less than
half the CT primary current rating. See Example
above.
If you connect the IN current input to the
secondary of a neutral or ground current
transformer as shown in Figure 2.6, page 30,
calculate CTRN and INTAP based on the ground
CT ratings similar to the phase CT calculations
shown in the example above.
If you connect the IN input residually, as shown in
Figure 2.7, page 30, set CTRN equal to CTR and
INTAP equal to ITAP.
4.3.3 Phase Rotation, Nominal
Frequency Settings
Setting Prompt
Phase Rotation ABC, ACB
Nominal Frequency 50, 60 Hz
Date Format MDY, YMD
Demand Meter Time
5, 10, 15,
30, 60 min
Constant
Table 4.4 Phase Rotation, Nominal Frequency
Settings
The phase rotation setting tells the relay your
phase labeling standard. Set PHROT equal to
ABC when B-phase current lags A-phase current
by 120°. Set PHROT equal to ACB when B-phase
current leads A-phase current by 120°.
Settings Calculation
Setting Setting Name =
Range Factory Default
PHROT = ABC
FNOM = 60
DATE_F = MDY
DMTC = 15
4
43