Prix FOB
Obtenir le dernier prix|
1 Unit Minimum Order
Pays:
India
N ° de modèle:
UBZ-302
Prix FOB:
Localité:
New Delhi, India
Prix de commande minimale:
-
Commande minimale:
1 Unit
Packaging Detail:
-
Heure de livraison:
7 - 10 working days
Capacité de Fournir:
1000 Unit per Week
Payment Type:
T/T, L/C
Groupe de produits :
Personne àcontacter Mr. Debashish
C-30, Patparganj Industrial Area, 1st floor,, Delhi, Delhi
UBZ***2 is the microprocessor
based digital device, reliable and of highest degree of measurement
accuracy. It doesn’t require the operational external power supply
since the controlled voltage at the same time is the power supply
for UBZ***2. It has 3 built-in current measurement transformers
through which the motor power supply wires are looped for
continuous currents monitoring. Universal electric motor protection
device (hereinafter UBZ***2) is designed for the continuous control
of the power supply voltage, monitoring of UBZ***2 protects the
electric motors in the following alarm situations:
- Low quality power supply voltage: not allowable voltage surges
and fluctuations, phase loss, wrong phase sequence, phase imbalance
of phase/line voltage, phase coincidences;
- Mechanical overloads (symmetrical overload in phase/line
currents);
- Exceeding the threshold for reverse current sequence;
- Non-symmetry of the phase currents in the absence of overload
which may happen either due to fault of insulation of the motor
coils or the power supply cable. UBZ***2 performs comparison of
non-symmetry coefficient for reverse sequence current with the
non-symmetry coefficient of the voltage on the reverse
sequence.
- Disappearing of the drive torque of the motor shaft (dry stroke
for the pumps) – protection on the minimal starting current and/or
operation current;
- Long lasting motor start or blocked rotor;
- Checking the level of insulation between the stator and motor
case before the motor start;
- Earth leakage protection of stator coils during the motor
operation;
- Thermal overload protection for the motor;
- Overheating protection for the motor coils. UBZ***2 performs
temperature monitoring using built in to the motor temperature
sensors or the temperature of the motor case could be measured with
the use of external temperature sensors (RTD
s).
actingvalues
of phase/line currents in 3 phase electrical circuits and
additionally performs theresistance
testto check the
level of motor coils (winding) insulation. Moreover UBZ***2 is capable to work in
electric circuits with isolated neutral (allows operation in both
in 3 and 4 wire electric circuits). For every type of protection mentioned above
it’s possible to set individually the autoreclosing parameters
(allowed or not allowed to start the motor automatically after
certain type of fault or alarm situation). UBZ***2 performs
protection of a motor or equipment by operating with the magnetic
coil of contactor which in its turn commutes the required power
load. UBZ***2 has 2 output relays: DATA TRANSMISSION
(SCADA):power load
relayandfunctional
relay. Presence of 2
output relays gives the possibility to
arrangeDELTA/STARswitching,
turnONwith
the delayed start (cascade turnONof
motors) and remote signalization. UBZ***2 detects the presence of
the currents when thepower load
relaycontacts are
open and when thefunctional
relayis in
theDELTA/STARmode.
If these currents are detected then UBZ***2 indicates the fault of
the external contactor that turns motorON.UBZ***2
will keep on indicating this fault until it will not be deenergized
(turnedOFF).-
control operation and data transmission using RS***5 interface in
accordance with MODBUS RTU protocol, - control operation and data
transmission using RS***2
interface.
| Pays: | India |
| N ° de modèle: | UBZ-302 |
| Prix FOB: | Obtenir le dernier prix |
| Localité: | New Delhi, India |
| Prix de commande minimale: | - |
| Commande minimale: | 1 Unit |
| Packaging Detail: | - |
| Heure de livraison: | 7 - 10 working days |
| Capacité de Fournir: | 1000 Unit per Week |
| Payment Type: | T/T, L/C |
| Groupe de produits : | Novatek-Electro |
