Operator`s manual

Index
I-ii Siemens Energy & Automation, Inc.
Instantaneous Phase Overcurrent (50) 2, 21
Intelligent SwitchGear System (ISGS)
1
internal connections
6, 7
inverse curve
53
isolation
4
I-Squared-T curve
56
J
jumper positions 16
K
keypad 9
L
LCD 10
LEDs
9
log reset
35
logs
current minimum/maximum
44
event
43
frequency minimum/maximum
45
minimum/maximum
44
power minimum/maximum
45
trip
43
voltage minimum/maximum
45
long inverse curve
54
M
marshalling 31
matrixing events to outputs
31
matrixing procedure
32
menu structure
11, 60
meter display
47
metered data
46
metering
3
current
46
frequency
46
power
46
voltage
46
metering accuracy
58
min/max log reset
35
Min/Max logs
44
moderately inverse curve
54
moderately inverse overvoltage curve
57
moderately inverse undervoltage curve
57
mounting
5
mounting dimensions
5
N
Negative Sequence Voltage (47N) 3, 27
network communications (RS-485)
8
Neutral or Ground Time Overcurrent (51N)
2
Neutral Time Overcurrent (51N)
23
O
operation
field service
2
optional configurations
3
output contact status
37
Overfrequency (81O)
3, 28
Overvoltage (59)
3, 26
overvoltage curves
56
overvoltage equation
57
P
paddles
illustration
5
parameter sets
21, 39
parameters
demand
29
operating
47
password
10
PC communications (RS-232)
8
Phase Sequence Voltage (47)
3
,
27
Phase Time Overcurrent (51)
2, 23
pickup
21
pickup LED
9
power conventions
59
power flow
18
power metering
46
power minimum/maximum log
45
Power On
15
Power On display
15
Power On Meter display
15
power setpoints
30
power supply
4
power values
46
product description
2
protection
Breaker Failure (50BF)
2, 28
Directional Neutral or Ground Time
Overcurrent (67N)
25
Directional Phase Time Overcurrent (67)
24
Directional Time Overcurrent (67)
3
High-Set Instantaneous Neutral or Ground
Overcurrent (50 HSN)
3
High-Set Instantaneous Neutral or Ground
Overcurrent (50HSN)
22
High-Set Instantaneous Phase
Overcurrent (50HS)
3, 22
Instantaneous Neutral or Ground
Overcurrent (50N)
2, 22
Instantaneous Phase Overcurrent (50)
2, 21
Negative Sequence Voltage (47N)
3, 27
Neutral or Ground Time Overcurrent (51N)
2
Neutral Time Overcurrent (51N)
23
Overfrequency (81O)
3, 28
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isv3o_1.bk : isv3o_1.ix Page ii Wednesday, August 7, 1996 10:51 AM