Product Details
Product Description
Product Description
Focus on DCS, PLC, robot control system and large servo system.
Main products: various modules / cards, controllers, touch screens, servo drivers.
Advantages: supply of imported original products, professional production parts,
Fast delivery, accurate delivery time,
The main brands include ABB Bailey, Ge / fuanc, Foxboro, Invensys Triconex, Bently, A-B Rockwell, Emerson, ovation, Motorola, xyvom, Honeywell, Rexroth, KUKA, Ni, Deif, Yokogawa, Woodward, Ryan, Schneider, Yaskawa, Moog, prosoft and other brands
Protection functions: ANSI
code Description
Generator differential
Power transformer differential
87G
87T
three-phase
three-phase for 2- and 3-winding transformers
Definite time overcurrent (undercurrent)
Overcurrent or undercurrent with peak value
evaluation
Restricted earth fault
Voltage-controlled overcurrent
Inverse time overcurrent
Directional definite time overcurrent
Directional inverse time overcurrent
Negative phase sequence current
Definite time overvoltage (undervoltage)
100% stator and rotor earth fault
protection
Dead machine protection
51
50
87N
51/27
51
67
67
46
59
27
64
64 S
64 R
50AE
definite time delay, for phase and earth-fault, overand undercurrent
instantaneous operation or with definite time delay,
value evaluation wide frequency range, over- and undercurrent
overcurrent operation with definite time delay*
operation restrained by undervoltage
inverse current dependent time delay, for phase and
earth fault (51N)
definite time tripping
inverse time tripping
negative phase sequence current with definite time delay or
inverse time delay with thermal replica
definite time delay, over- and undervoltage
Applicable also for
- stator E/F (95%) (59 G/N)
- rotor E/F (64 R) **
- intertum fault protection
based on the displacement principle calculation of the
earth fault resistance.
in addition the units REX010 and REX011 are required
Underimpedance
Minimum reactance
Pole slip protection
High-voltage distance protection
Distance protection
21
40
78
21Z
21Z<
circular characteristics centered at origin of impedance plane
circular characteristics for loss of excitation protection
detecting loss of synchronism of a generator as against the network
6-system high-voltage protection
distance protection with overcurrent or underimpedance starting
Power 32
37
any characteristic angle, over and underpower for:
- active power
- reactive power
- reverse power protection
- minimum forward power
Overload
Negative phase sequence current
Overtemperature
49
46
49
thermal replica with operating characteristic
according to ASA-C50.13*** for:
- standard stator current (49 S)
- rotor current (49 R)
evaluation of negative phase sequence of currents
inverse time delay;
with terminal replica
thermal protection with precise thermal replica
and 216GA62.
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