7
SVERKER 750/760
Programma Electric AB
ZP-CD01E R05A
2 Introduction
Plotting excitation curves
Current and voltage transformation ratio tests
Burden measurement for relay protection equip-
ment
Impedance measurement
Efficiency tests
Polarity (direction) tests
2.1 Applications
Sverker 750/760 is intended primarily for testing
relay protection equipment, but it can also be used
for many other purposes. Virtually all single-phase
relay protection equipment that does not require
variable frequency can be tested, and Sverker 750/
760 can also test three-phase relay protection
equipment that can be tested phase by phase.
Moreover, many relay protection systems that
require phase shifting can be tested.
Items that can be tested using Sverker 750/760
include:
Type of relay IEEE standard
code
Overcurrent relay 50/76
Inverse time overcurrent relay 51
Undercurrent relay 37
Ground fault relay 50
Directional overcurrent relay 67
Directional ground fault relay 67N
Overvoltage relay 59
Undervoltage relay 27
Directional voltage relay 91
Directional power relay 32
Power factor relay 55
Differential protection
(differential circuit) 87
Distance protection
equipment (phase by phase) 21
Negative sequence overcurrent
relay 46N
Motor overload protection 51/86
Automatic reclosing devices 79
Tripping relays 94
Voltage regulating relay
Overimpedance relay
(Z greater than ...)
Underimpedance relay
(Z less than ...)
Thermal relay
Time-delay relay
Other applications
To Next Page
Loading...
Need help?
General
