Broyce Control ELRV-30 User manual

Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England
Telephone: [phone] Facsimile: [phone] Email: [email protected] Web: http://www.broycecontrol.com
The information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user’s own risk.
ELRV30-2-ARMS
012366 Page 1of 2
•CONNECTION DIAGRAM
14
1
standard
output
positivesafety
output
test
reset
A1(+ve)
A2(-ve)
Faultleveloutput*
(i.e.lamp)
2
3 5 7 9 11 13
4 6 8 10 12
toroid
50m*max.
50m*max.
L1
L2
L3
N
E
Note:The voltage
across the faultlevel
outputMUSTNOT
exceed 240V~(For
400V~unitsused in
3-Phaseinstallations,
connectthe load between
terminal2and neutral)
The EarthMUSTNOTpass through
the toroid.
Forsinglephaseapplications,onlythe live
and neutralneed tobe passed through the
toroid.
*Cabling:
Fordistances>1m,usetwisted paircablebetween
the unitand toroid.Always ensurecablestotoroid
and remotetest/resetswitchesAREKEPTAWAY
frommainsand datacablesinthe sameinstallation.
Bothrelays areshown
inthe de-energised state
(i.e.wherepowerisnot
presenton terminals1and 3)
E
*Onlyavailableon ACsupplymodels
Type: ELRV-30
True RMS Earth Leakage Relay (Variable) -Type A
q70mm DIN rail housing
qDesigned to monitor and detect true RMS, earth fault currents (up to 30A) in conjunction with a separate toroid
qFast response time of <25mS1to fault currents that are 5 x greater than the set trip current
qDigital LED Display shows measured leakage current, various user settings and diagnostics
qMicroprocessor controlled with internal monitoring (self-checking)
qSensitivity (I∆n) and time delay (∆t) adjustable using simple 2-button operation
q“Display” push button allows user to view settings without needing to open the tamperproof cover. The “last recorded” peak
trip current can also be recalled using the same push button
qSingle button operation for “Test / Reset” and connection facility for remote “Test” and “Reset” push buttons
qConnection for remote lamp facility warning user prior to a trip condition (level adjustable by user)
qToroid open and short circuit detection (unit forced to trip during open circuit condition)
q2 x SPDT relay output 8A. LED indication of user settings / fault condition after unit has tripped 1“inst.” time delay setting / fault current <30A
Dims:
to DIN 43880
W. 70mm
•TECHNICAL SPECIFICATION
Supply voltage Un (1, 3): 12 –60V DC (85 –115% of U)
24, 115, 230, 400V AC (85 –115% of Un)
Galvanic isolation between the supply and the toroid and
remote test / reset connections on AC supply versions.
Supply frequency: 50/60/400Hz (AC supplies)
Isolation: Over voltage cat. III
Rated impulse
withstand voltage:
(1.2 / 50µS) IEC 60664 800V (24V AC supply
2.5kV (115V AC supply)
4kV (230V, 400V AC supplies)
Power consumption (max.): 6VA (AC supplies), 5W (DC supply)
Monitored leakage current: 2mA to 30A (50/60/400Hz)(through external toroid with
1000:1 ratio and connected to terminals 11 and 13)
Sensitivity I∆n: 6, 10, 30, 50, 75, 100, 300, 500, 750mA
1, 3, 5, 7.5, 10, 15, 20, 25, 30A (user selectable)
Trip level: 75% of I∆n (nominal)
Hysteresis: 8% of I∆n or 2mA, whichever greater
Accuracy: ±15% (valid range 10 …. 110% of I∆n or 2mA,
whichever greater)
Time delay ∆t: inst., 50, 250, 500mS, 1, 2.5, 5, 10 sec. (user selectable)
Note: For I∆n settings of 30mA or less, the time delay is fixed
to inst. (instantaneous, <25mS) and is not adjustable.
Measured current: Displayed on auto ranging 2 digit 7-segment red LED display
Display Resolution: 100uA min.
Reset time: <200mS (from supply interruption)
Power on delays: Self test duration: <5 secs.
(from application of supply Delay before P.S.O. relay energises “td”:600mS (Note: relay
to terminals 1 and 3) will energise during self test period assuming no fault present)
Memory: storage of the leakage fault and reset with “test / reset” button
Ambient temp: -5 to +60°C
-5 to +40°C (in accordance with IEC 755)
Relative humidity: +95%
Output : 2 x SPDT relay (4, 6, 8 / 10, 12, 14)
Output rating: AC1 250V 8A (2000VA)
AC15 250V 2.5A
DC1 25V 8A (200W)
Electrical life: ≥150,000 ops at rated load
Dielectric voltage: 2kV AC (rms) IEC 60947-1
Rated impluse
withstand voltage: 4kV (1.2 / 50µS) IEC 60664
Remote “test” / “reset”
(5, 7, 9) Requires two N.O. contacts. (i.e. push buttons)
Contact closure time: >100mS
Fault level output (1, 2): 50% of I∆n (factory set)
User adjustable from 10 -65% in 5% increments
Hysteresis: 8% of I∆n or 2mA, whichever greater
Load (resistive): 40mA max. @ 240V
Note: A remote lamp can only be connected when terminals 1
and 3 are being supplied with an AC supply
Housing: Grey flame retardant Lexan UL94 VO
Weight: ≈250g (AC supplies), ≈170g (DC supply)
Mounting option: On to 35mm symmetric DIN rail to BS5584:1978
(EN50 002, DIN 46277-3)
Terminal conductor size: ≤2.5mm2stranded. ≤4mm2solid
Approvals: Conforms to: IEC 755. IEC 61543 (EMC)
Radiated Immunity: IEC 61000-4-3: 1.89GHz @ 30V/m
and pending. CE and Compliant.
•Options
For other supply voltages, alternative trip levels or time delays, please consult the sales office.
•Accessories –Toroids
Toroid Type: Internal diameter:I∆n (min.) A
BZCT035 35mm ∅0.03
BZCT070 70mm ∅0.03
BZCT120 120mm ∅0.1
BZCT210 210mm ∅0.3
Note:
( ) Numbers in brackets shown above refer to terminal numbers on the relay housing.
•FUNCTION DIAGRAM
Standard
output
fault
current
failureofconnection
totoroid
"reset" "test"
s
u
p
p
l
y
interrupted
Triplevel(In) ∆
Positivesafety
output
∆ t
(
c
o
m
b
i
n
e
d
t
e
s
t
/
r
e
s
e
t
b
u
t
t
o
n
p
r
e
s
s
e
d
)
Resetlevel
tdtd
Terminal Protection to IP20
•INSTALLATION
•BEFORE INSTALLATION, ISOLATE THE SUPPLY.
•Connect the unit as shown in the diagram below (N.B. certain features may not be required and
therefore do not need to be connected).
•Operational and setting information can be found on the reverse of this data sheet.
This unit should be installed in conjunction with the latest wiring regulations and practices (IEE, etc)
•MOUNTING DETAILS
Insertscrewdriver
toreleaseclip
49.5
33
6
3
.
5
45
8
5
Installationworkmustbecarried
outbyqualifiedpersonnel.
Please state Supply
voltage when ordering.

Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England
Telephone: [phone] Facsimile: [phone] Email: [email protected] Web: http://www.broycecontrol.com
The information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user’s own risk.
ELRV30-2-ARMS
012366 Page 2of 2
•OPERATING INSTRUCTIONS AND SETTINGS
Description
•The operating function of this unit is classed as a Type A for which tripping is ensured for residual true RMS sinusoidal alternating currents and residual pulsating direct currents, whether
applied suddenly or slowly rising. Additionally, this unit is protected against nuisance tripping.
Applying power (assuming no leakage current present)
•Apply power,the "positive safety output" relay will energise and contacts 6and8will close after delay “td”. The "standard output" relay will remain de-energised (contacts 12 and 14 open).
•After carrying out a self test (all segments illuminate on the LED display for a short period), then indicate the I∆n setting, followed by the measured “leakage current” that may be present in the
installation. The yellow LED’s to the left of the display show whether the current is “mA” or “A”.
Viewing and changing the user settings.
Note: The unit is factory set to 30mA trip and instantaneous delay. The remote fault level output is set to 50%. Adjustment of these settings can be made if required to suit the requirements of the
installation. A seal is supplied with the unit allowing the user to secure the clear window and hence prevent any unnecessary adjustment of the settings.
•The settings can be viewed and checked by pressing the “Display” push button as shown. Carrying out adjustments to these settings requires the tamperproof cover to be lifted in order to gain
access to the two push buttons underneath.
•If during the adjustment of any settings, a push button is released, the display will revert back to indicating the measured “leakage current” after a short duration.
mA
A
sec.
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
Press "Display"button
(If the pushbutton remains
pressed,the displaywill
alternatebetween the "In"
and "t"settings)
∆
∆
Tomodifysettings
(Release"Display"button first)
mA
A
sec.
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
mA
A
sec.
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
mA
A
sec.
1stpress
Insetting (i.e.300mA) ∆
2nd press
tsetting (i.e.50mS) ∆
3rdpress
faultleveloutput(i.e.40%)
4
t
h
p
r
e
s
s
Recorded currentcausing unit
totripon lastoccassion (i.e.330mA)
Max.recordablecurrentis<42A
1stpress displays Insetting.
Press againtochange setting.
Press and holdtoautomaticallyincrement
setting.
(Yellow"mA"or"A"LED'sflashaccording
torange).
∆ 1stpress displays tsetting.
Press againtochange setting.
(Yellow"Sec."LEDflashes)
∆
Press and holdInand tbuttons.
Setting will incrementautomatically
("mA"and "A"yellowLED'sflash
simultaneously)
∆ ∆
5thpress revertsdisplayback to
measured leakage currentorstarts
the "settings"sequenceagain.
Notethatthe aboveisonlyan
exampleofhowthe unitcould
be set.
Note: After a change to a setting has been made, the new setting will only be stored once the yellow LED has stopped flashing. Fig. 1
Fault simulation (Test mode)
•The unit can be placed into a fault condition by pressing the "Test/Reset" button on the front of the unit (or by pressing the remote “Test” button -if fitted). If the unit is already in a “no fault”
condition, i.e., not tripped, the first press will trip the unit. The output relays operate accordingly. The display shows the characters as in Fig.2
•Press the same button again to reset the unit. The display reverts back to any measured leakage
current that may be present.
•The unit can also be reset using the external “Reset” button (if fitted) or by interrupting the
power supply.
•To satisfy regulations, it is recommended the device is tested periodically to ensure correct operation.
Fault conditions
Leakage currents Fig. 2
•If during normal service, the leakage current increases above the setting for the fault level output, the remote lamp will illuminate (if fitted) and the display will flash to give the user early warning
of a possible fault condition. If the fault persists and the level of leakage current exceeds the trip level setting, the unit will trip. The "positive safety output" relay will de-energise and contacts 6
and 8will open. The "standard output" relay will energise and contacts 12 and 14 will close. The red “fault” LED will illuminate and the display will stop flashing.
•Pressing the “Test/Reset” button returns the unit back to normal operation, assuming the fault has cleared. Note that the level of current that caused the unit to trip is now stored and can be
re-called by pressing the “Display” button (see Fig.1). Note that the recorded trip current is only stored whilst power is applied and cleared if the power supply is interrupted.
Toroid open circuit
•If the wiring between the unit and toroid becomes damaged (open circuit), the unit will trip.
•The display shows the following characters as in Fig.3
•After the fault has cleared, press the “Test/Reset” button to return the unit back to normal operation.
Note that the unit cannot be reset remotely following an open circuit condition.
Fig. 3
Toroid short circuit
•Shorts that are present across terminals 11 and 13 (typically < 33Ωand purely resistive) will force the
unit to display the characters as shown in Fig.4. However, the unit still remains functional other than
not being able to detect and display fault currents.
Supply voltage fault Fig. 4
•If the applied supply voltage is <70% of Un (typical), the unit will not operate and the display shows
the following characters as in Fig.5. During this condition and assuming the supply is also >50% of Un,
the lamp connected to the fault level output will flash.
After the correct voltage has been established, the unit will revert to normal operation.
Troubleshooting Fig. 5
•If the unit fails to operate correctly other than that described above, then the fault will more than likely be with the wiring to the unit. Check all wiring and that the connections are good.
•Ensure the supply to the unit is present on terminals 1 and 3 and is within the operational limits specified. For DC units, ensure the polarity of the supply is correct.
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
mA
A
Sec.
mA
A
Sec.
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
mA
A
Sec.
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
∆ t
TEST/
RESET
DISPLAY
In ∆
SET
mA
A
Sec.