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VM1/A/P
- INSTALLATION AND SERVICE INSTRUCTIONS ANSI: ... 15 KV; ... 2000 A; ... 31.5 K A
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6. Description
6.10. Optional accessories
The accessories identified by the same number are
alternative to each other.
1 ED2.0 Control module
The full option ED2.0 control module is available on
request as an alternative to the basic version ED2.0
control module and must be selected during the
ordering stage since the possibility of replacing the
basic module is not foreseen.
The full option ED2.0 control module is available
with two types of feeders:
•
Type 1: 24 ... 48 V AC / 24 ... 60 V DC
•
Type 2: 100 ... 240 V AC / 110 ... 250 V DC
and provides the following signalling, control and
operating functions:
1) signalling contacts without potential, fitted
with relay, with the following functions (for the
characteristics of the contacts without
potential, see chapter 7.3.4.).
•
N. 2 contacts signalling circuit breaker open
(DO1, DO2)
•
N. 2 contacts signalling circuit breaker closed
(DC1, DC2)
•
N. 1 contact signalling circuit breaker ready for
the operation (DR). This is a closed contact when
the circuit breaker is ready for the operation, i.e.
when the following conditions are met:
- capacitor charged (the energy stored is
sufficient to carry out one closing and
opening operation if the circuit breaker is in
the “open” state or one opening operation if
the circuit breaker is in the “closed” state),
- circuit breaker in a well-defined state (either
“open” or “closed),
- positive outcome of the opening and closing
coil continuity of the magnetic actuator.
•
N. 1 contact signalling circuit breaker not ready
for the operation (DN). This contact is of the
normally closed type and therefore, even if there
is no auxiliary voltage its indication “the circuit
breaker is not ready for the operation” is always
correct. The indication of circuit breaker not
ready for operation is given when even only one
of the following conditions occurs:
- capacitor not charged (the energy stored is
insufficient or there is no auxiliary voltage),
- circuit breaker in an undefined state (neither
“open” nor “closed”)
- no continuity of the opening and closing coil
of the magnetic actuator.
2) binary inputs (logical inputs) for remote control:
• N. 1 input for closing command (-SC2) (top logical
input activated)
• N. 1 input for opening command (-SO2) (top
logical input activated)
•
N. 1 input for additional opening command
(-SO3) (top logical input activated)
•
N. 1 input for circuit breaker opening on direct
command from the PR512 protection release
(-SO5) (top logical input activated)
•
N. 1 input for lock on closing command (the same
function as the one carried out by the –RL1
locking electromagnet in the mechanical drive of
the VD4 circuit breaker) (-SL1) (bottom logical
input activated)
•
N. 1 input for undervoltage opening command
(-S04): The function can be excluded (bottom
logical input activated).
N.B. The binary inputs can be supplied as follows:
- 24 ... 240 V AC (tolerance – 15% ... + 10%)
- 24 ... 250 V DC (tolerance – 30% ... + 10%).
A binary input is considered valid when the impulse
applied lasts at least 20 ms.
3) The functions carried out by the control module
are:
• auto-trip following detection of wrong circuit
breaker state after an operation attempt
• auto-trip following lower capacitor charging
threshold than the minimum value required for
the opening and closing operation
• anti-pumping relay function
•
priority opening function in the case of opening
and closing commands being sent at the same
time (TRIP-FREE)
• checking the capacitor load voltage with auto-
shutdown of the feeder when the maximum
charging level is exceeded
•
opening for undervoltage. The rated voltage is
set (values foreseen: 24-30 V AC, 48-60 V DC,
100-127 V AC/V DC 220-240 V AC/V DC) and
opening can also be delayed (trip delays
foreseen: 0-0.5-1-2-3-4-5 sec). The “lock in open”
(the closing command is only accepted after the
opening function for undervoltage has been
•
N. 1 transient contact with momentary closing
(for 100 ms) during the opening operation (DOR).
This contact has the same function as the one
carried out by the –BB4 contact in the
mechanical operating mechanism of the VD4
circuit breaker.
N.B. With the circuit breaker not supplied (without auxiliary
power supply) these contacts are open, except the contact
signalling circuit breaker not ready for the operation (DN).
Summary of Contents for VM1/A/P
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