`nelster' is india's pioneer 7 the largest manufacturer of relay test blocks. `nelster' standards for quality & safety requirements exceed national standards and could be traced to international length standards as is evident from government of india's premier nabl accredited laboratories. For more information please visit
Testterminal blocks are useful in in-situ testing of electrical energy meters without disrupting load circuit.
Semaphore indicators are used for open / close indication of circuit breakers, on mimic panels
Test terminal block
Test terminal blocks are used for in-situtesting of electrical energy meters viz.Trivector metsrs, mdi and other ct operated meters and protective relays
PW336i(6*15A,4*150V)is a powerful secondary injection relay tester with 6-currents and 4-voltages sources.This advanced relay testing set is capable of testing differential relay easily without changing cable connection.Optional upgrade is available to support the test of IEC61850 relay.
Features
6*15A, 4*150V
Aux DC (0-300V), DC measuring inputs
8 binary inputs, 4 binary outputs
Adjustable threshold (0-400V) for binary inputs
In-built analog monitoring and recording function
Can be upgraded to support the test of IEC61850 complied relay
PW466i (6*20A, 6*150V) is a powerful secondary injection test set with 6-currents and 6-voltages sources.This advanced secondary injection kit is capable of testing differential relay and synchronizing relay. Optional upgrade is available to support the test of IEC61850 relay.
Features
6*20A, 6*150V
Aux DC (0-300V)
8 binary inputs, 4 binary outputs
Adjustable threshold (0-400V) for binary inputs
In-built analog monitoring and recording function
Can be upgraded to support the test of IEC61850 complied relay
PW460 (6*15A, 4*300V) is the 3 phase relay test equipment can test all types of protective relays.This relay test kit has in-built output monitoring and recording function and also supports testing kit IEC 61850 IED.Optional accessories include external amplifier,GPS,Circuit Breaker Simulator,Current Booster,etc.
Features
6*15A, 4*300V
Aux DC (0-300V), DC measuring inputs
8 binary inputs, 8 binary outputs
Adjustable threshold (0-400V) for binary inputs
In-built analog monitoring and recording function
Can be upgraded to support the test of IEC61850 complied relay
Features
High performance Embedded-Industrial-Computer.
8.4¡ high-resolution large LCD screen. Display all kinds of test data, operating states, and prompts and help messages.
Windows operating system, Slim industrial Keyboard and optical Mouse, and many Hotkeys, most convenient to operate.
Perform all test items without any external device, automatically display and record test data, and automatically plot vector diagrams and characteristic curves, and print reports.
Provide many automatic test procedures.
GPS synchronously trigger, synchronization error less than 50|¨¬S.
USB port to transmit data and maintenance operating software.
High performance D/A converter, assure high waveform accuracy and excellent linearity, transient response and frequency-amplitude characteristic.
Particular waveform generation algorithm, assure pure sine wave.
Hi-Fi power amplifier, create high output power and low ripple.
Except of traditional Ua, Ub, Uc, Ia, Ib, Ic, the fourth voltage Ux can be applied to many functions, such as 3Uo and synchronous voltage, etc.
Eight switch input and Four pairs of idle contact output. Switch input ports are compatible with idle contact and active contact, and capable to identify the polarity of active contact, and work well during ¡¨¤250V.
Self-diagnosis and multi-protection, reasonable heat dissipation structure, ensure safety and reliability.
Well-designed, high-strength aluminium alloy case with carrying handle, facilitate moving to test on site.
Model s40a (3*40a, 3*150v) has large lcd display and panel control facilities. No external pc is required. It can easily test many types of relays, including distance relay, df/dt relay. The rotating mouse and quick touch buttons make the operation very easy.
3*40a, 3*150v
Additional 200ma ac current source
Aux dc (24v, 110v, 220v)
4 binary inputs, 1 binary output
Locally with color lcd
(universal relay tester, relay test equipment, 3 phase relay test set, secondary injection test system)
Model t200a (250aac, 500vac, ac/dc current) can be used to test many types of relays, including high burden relay and ct.
Operation is easy, no much training is required.
High power current source for high burden relay test
Capable of testing differential relay with two independent current sources
Capable of testing directional relay with adjustable phase angle
In-built ammeter and voltmteter
120s output time at 250a
Rotating mouse control and quick control buttons
Large lcd display
Many ready test modules for automatic test applications
(secondary injection test set, relay tester, single phase relay test set, universal tester)
