ESP M1 Series

ESP M1 Series
ESP M1 Series
Installation
Install in parallel, within the power
distribution board or directly (via
fuses) on to the supply feeding
equipment.
Combined Type 1, 2 and 3 tested protector (to BS EN 61643) for use
on mains power distribution systems primarily to protect connected
electronic equipment from transient overvoltages on the mains
supply, e.g. computer, communications or control equipment. For use
at boundaries up to LPZ 0B to protect against flashover (typically the
main distribution board location, with multiple metallic services
entering) through to LPZ 3 to protect sensitive electronic equipment.
Parallel connection of single phase protectors
ESP 240 M1, ESP 120 M1 or ESP 277 M1
(fuses not shown for clarity)
Features and benefits
✔
Very low let-through voltage (enhanced protection to BS EN 62305)
between all sets of conductors (phase to neutral, phase to earth, neutral
to earth - Full Mode protection)
✔
Full mode design capable of handling partial lightning currents as well
as allowing continual operation of protected equipment
✔
Repeated protection in lightning intense environments
✔
Innovative multiple thermal disconnect technology for safe
disconnection from faulty or abnormal supplies (without compromising
protective performance)
✔
Three way visual indication of protection status and advanced
pre-failure warning so you need never be unprotected
Remote indication facility allows pre-failure warning to be linked to a
building management system, buzzer or light
✔
Changeover active volt-free contact enables the protector to be used to
warn of phase loss (i.e. power failure, blown fuses etc)
✔
Flashing warning of potentially fatal neutral to earth supply faults (due
to incorrect earthing, wiring errors or unbalanced conditions)
✔
Robust steel housing
✔
Base provides ultra-low inductance earth bond to metal panels
✔
Compact size for installation in the power distribution board
✔
ESP 120 M1 and ESP 240 M1 have Network Rail Approval PA05/02700
and PA05/01832 respectively. NRS PADS reference 086/000556
(ESP 120 M1) and 086/047149 (ESP 240 M1)
At distribution boards, the
protector can be installed either
on the load side of the incoming
isolator, or on the closest
outgoing way to the incoming
supply. Connect, with very short
connecting leads, to phase(s),
neutral and earth.
For TT installations, contact Furse.
Accessories
Weatherproof enclosures
WBX 3
Use with single phase protectors
ESP 415 M1 installed within a control panel on the
mains input to protect the panel’s control systems.
Note the remote indication connection (top of protector)
WBX 4
Use with three phase protectors
Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email: enquiry@furse.com • Web: www.furse.com
TSC-0912 - 09.10.12
✔
Parallel connection of ESP 415 M1,
ESP 208 M1 or ESP 480 M1 to three phase
star (4 wire and earth) supplies
(fuses not shown for clarity)
ESP M1 Series
Technical specification
Electrical specification
ESP 120 M1
ESP 208 M1
ESP 240 M1
ESP 415 M1
ESP 277 M1
ESP 480 M1
Nominal voltage - Phase-Neutral Uo (RMS)
120 V
120 V
240 V
240 V
277 V
277 V
Maximum voltage - Phase-Neutral Uc (RMS)
150 V
150 V
280 V
280 V
350 V
350 V
Temporary Overvoltage TOV UT
175 V
175 V
350 V
350 V
402 V
402 V
232-350 V
402-600 V
ESP 415 M1
ESP 277 M1
ESP 480 M1
900 V
1 kV
1 kV
750 V
850 V
850 V
900 V
1 kV
1 kV
1
Short circuit withstand capability
25 kA, 50 Hz
Working voltage (RMS)
90-150 V
156-260 V
200-280 V
Frequency range
346-484 V
47-63 Hz
Max. back-up fuse (see installation instructions)
125 A
Leakage current (to earth)
< 250 µA
Indicator circuit current
< 10 mA
Volt free contact2
- current rating
- nominal voltage (RMS)
Screw terminal
1A
250 V
Transient specification
ESP 120 M1
ESP 208 M1
ESP 240 M1
600 V
600 V
900 V
Type 1 (BS EN/EN), Class I (IEC)
Nominal discharge current 8/20 µs (per mode) In
Let-through voltage Up at In3
20 kA
Impulse discharge current 10/350 µs Iimp
(per mode)4
4 kA
Let-through voltage Up at Iimp3
500 V
500 V
750 V
Impulse discharge current (per phase) limp5
6.25 kA
Type 2 (BS EN/EN), Class II (IEC)
Nominal discharge current 8/20 µs (per mode) In
Let-through voltage Up at In3
20 kA
600 V
600 V
900 V
Maximum discharge current Imax (per mode)
40 kA
Maximum discharge current Imax (per phase)
80 kA
4
Type 3 (BS EN/EN), Class III (IEC)
Let-through voltage at Uoc of 6 kV 1.2/50 µs and
Isc of 3 kA 8/20 µs (per mode)6
Mechanical specification
390 V
390 V
600 V
600 V
680 V
680 V
ESP 120 M1
ESP 208 M1
ESP 240 M1
ESP 415 M1
ESP 277 M1
ESP 480 M1
Temperature range
-40 to +80 ºC
Connection type
Screw terminal
Conductor size (stranded)
Earth connection
Screw terminal
Volt free contact
Connect via screw terminal with conductor up to 2.5 mm2 (stranded)
Degree of protection (IEC 60529)
IP20
Case material
Steel
Weight - unit
Weight - packaged
TSC-0912 - 09.10.12
16 mm2
0.6 kg
0.7 kg
1.0 kg
1.1 kg
0.6 kg
0.7 kg
1.0 kg
1.1 kg
0.6 kg
0.7 kg
1.0 kg
1.1 kg
Dimensions
Temporary Overvoltage rating is for a maximum duration of 5 seconds tested to BS EN/EN/IEC 61643.
Minimum permissable load is 5 V DC, 10 mA to ensure reliable operation.
The maximum transient voltage let-through of the protector throughout the test (±5%), phase to neutral, phase
to earth and neutral to earth.
4
The electrical system, external to the unit, may constrain the actual current rating achieved in a particular
installation.
5
Rating is considered as the current capability of the protector for equipotential bonding near the service entrance.
6
Combination wave test within BS EN/IEC 61643, IEEE C62.41-2002 Location Cats C1 & B3, SS 555:2010,
AS/NZS 1768-2007, UL 1449 mains wire-in.
1
60 mm
2
110 mm
3
Depth:
73 mm
180 mm
Single
Phase
Three
Phase
165 mm
M5 Clearance
If you desire a protector with an extra high maximum surge current use
the ESP M2 or ESP M4 series. If your supply is fused at 16 amps, or less, the
in-line protectors (ESP 240 or 120-5A (or -16A) and their ready-boxed
derivatives) may be more suitable. If you need to mount the display panel
separately from the main protector unit, use the ESP M1R series.
45.5 mm
70 mm
Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email: enquiry@furse.com • Web: www.furse.com
Note: The unit
takes up 20 mm
of the length of
the fixing screw
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