Schweitzer Engineering SEL-351P - Metering Accuracy; Factory Assistance

Specifications
78 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
Metering Accuracy
Accuracies are specified at 20°C and at nominal system frequency unless noted otherwise.
Voltages V
A
, V
B
, V
C
, V
S
, 3•V
0
, V
1
, V
2
±0.2% (33.5 - 150 V)
Currents I
A
, I
B
, I
C
±0.3 mA and ±0.1% (0.1 - 2 A) (1 A nominal)
Temperature coefficient:
[(0.0002%)/(°C)
2
] * (___°C - 20°C)
2
(see example below)
Currents I
N
, I
1
, 3•I
0
, 3•I
2
±0.01 A and ±3% (0.1 - 20 A) (1 A nominal)
±1 mA and ±5% (0.01 - 1.5 A) (0.05 A nominal
channel IN current input)
Phase Angle Accuracy
±1.0°
Metering accuracy calculation example for currents I
A
, I
B
, and I
C
due to preceding stated temperature
coefficient:
For temperature of 40°C, the additional
error for currents I
A
, I
B
, and I
C
is:
[(0.0002%)/(°C)
2
] * (40°C - 20°C)
2
= 0.08%
Factory Assistance
The employee-owners of Schweitzer Engineering Laboratories, Inc. are dedicated to making electric
power safer, more reliable, and more economical.
We appreciate your interest in SEL products, and we are committed to making sure you are satisfied. If
you have any questions, please contact us at:
Schweitzer Engineering Laboratories, Inc.
2350 NE Hopkins Court
Pullman, WA USA 99163-5603
Tel: (509) 332-1890
Fax: (509) 332-7990
We guarantee prompt, courteous, and professional service.
We appreciate receiving any comments and suggestions about new products or product improvements
that would help us make your job easier.