The SVERKER 760 features many functions that make relay testing more efficient. To cite one example, its powerful measurement section can display (in addition to time, voltage and current) Z, R, X, S, P, Q, phase angle and cos ϕ. The voltmeter can also be used as a 2nd ammeter (when testing differential relays for example). All values are presented on a single easy-to-read display. Thanks to its built-in variable voltage source (amplitude and phase angle), SVERKER 760 can also test directional protective equipment efficiently. Automatic reclosing devices can also be tested – just as easily. Fine regulation of current is easy thanks to the built-in set of resistors. Designed to comply with EU standards and other personal and operational safety standards, SVERKER 760 is also equipped with a serial port for communication with personal computers and the PC software SVERKER Win. Since the compact SVERKER 760 weighs only 18 kg (39 lbs), it’s easy to move from site to site. Two or more SVERKER 760 units can also be synchronized, which for example allows the user to connect three SVERKER 760’s into a basic 3-phase test set.
SVERKER 760 is intended primarily for secondary testing of protective relay equipment. Virtually all types of singlephase protection can be tested. SVERKER 760 is able to test three-phase protection that can be tested one phase at a time, and also a number of protective relay systems that require phase shifting. Moreover, automatic reclosing devices can be tested.
Examples of what SVERKER 750/760 can test:
Overcurrent relays 50/76
Inverse time overcurrent relays 51
Undercurrent relays 37
Ground fault relays 50
Directional overcurrent relays 67
Directional ground fault relays 67N
Overvoltage relays59 Undervoltage relays 27
Directional voltage relays 91
Directional power relays 32
Power factor relays 55
Differential protection (differential circuits) 87
Distance protection equipment (phase by phase) 21
Negative sequence overcurrent relays 46N
Motor overload protection 51/86
Automatic reclosing devices 79
Tripping relays 94
Voltage regulating relays
Overimpedance relays, Z>
Underimpedance relays, Z
Thermal relays
Time-delay relays