B0431
Emax X1-Tmax T7-Tmax T8
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Doc. No
Model
Apparatus
Scale
Page No
1SDH000587R0002
1.
PROTECTION RELEASE - GENERAL NOTES
The series of SACE Emax X1 air circuit-breakers and SACE Tmax T7-T8 molded-case circuit-breakers can be equipped with
PR331/P and PR332/P protection releases. SACE Emax X1 circuit-breakers can also be equipped with the PR333/P protection
release.
Every operational requirement is now available thanks to the different performance levels of the protection releases, the modules
that can be fitted inside them (PR330/V, PR330/D-M) and the other external accessories.
The following table illustrates the functions and accessories available with the 3 protection relays.
Function/Unit
PR331/P
PR332/P
PR333/P
Current protections (L, S, I, G)
S
S
S
Additional protections (U, OT)
S
S
S
Voltage protections (UV, OV, RV, RP, UF, OF)
S
(4)
S
(4)
S
Other protections (D, S2, Double protection G)
-
-
S
Harmonics analysis
-
-
S
Temperature protection
S
S
S
MCR Protection
S
S
S
Thermal memory
S
S
S
Residual current protection
O
O
O
Data Logger
S
S
S
Dual setting
-
-
S
Front connector for test unit and temporary power supply
S
S
S
Compatibility with Ekip Connect
S
S
S
Local bus for external accessory units
S
S
S
System bus for cable communication
O
(2)
O
(2)
O
(2)
PR330/V Measuring (internal voltages module)
O
O
S
PR330/R Signalling
O
O
O
PR330/D-M (Internal module for cable communication)
O
O
O
HMI030 (Switchgear display for protection releases installed in SACE
circuit-breakers)
O
O
O
Flex Interface (External signalling unit)
O
O
O
PR030/B (separate power supply unit)
S
S
S
Ekip T&P (External unit for power supply, communication and testing
via USB)
T
T
T
PR010/T (External unit for tests)
T
T
T
Key:
S : standard function/unit,
O : optional function/unit,
T :
optional unit for temporary connection,
-
: function/unit unavailable.
Notes:
1. : with PR330/V module,
2. : with PR330/D-M module,
4. : with CB SACE Emax X1
PR33x protection releases provide the following functions (availability of some of the functions depends on the version of the
release and on the presence of modules):
1. High current reading accuracy (up to 1.5%) 1.5%) and numerous other functions.
2. Continuous control of current sensors and trip coil connection.
3. Recording of the cause for tripping, also in the self-supply condition.
4. Extended neutral selection.
5. High performance event recording (data logger) with 8 analog and 64 digital signals synchronizable with hundreds of events/
situations as chosen by the user.
6. Double protection G function with simultaneous reading by two different current sensors (simultaneous use of the double
sensor available with PR333/P).
7. Analysis up to the 40th harmonic.
8. Power supply and measurements from busbar voltages (with module PR330/V).
9. Power contact configurable by the customer in terms of event, status and signalling delay options (S51/P1).
10. Communication via system bus (with module PR330/D-M).
11. Connection for HMI030 and Flex Interface external signalling and measuring modules.
12. Connection to a PC via wireless Bluetooth (with BT030-USB) or USB (with BT030-USB or Ekip T&P).
13. Serial connection for external modules Flex Interface and HMI030.
14. “Real time” date and time settings.
15. Software applications available for CB and protection release testing and maintenance.
B1751
