Thomas & Betts furse ESP 120 D1 Installation Instructions Manual Download Page 13 | Manualshive

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Installation instructions for mains wire-in protectors

Neutral-earth warning light (LED units)

If the WARNING light is illuminated there is an excessive
voltage present between neutral and earth.

The WARNING light should never be illuminated

.

(a) Illumination at time of installation

If the WARNING light flashes as soon as the mains supply
to the ESP unit is turned on, one of the phase/live cables
may have been connected to neutral and the neutral to
phase/live.

Isolate or disconnect the ESP unit

immediately

. Check the phase/live and neutral

connections and if a mistake has been made, correct it.
If all the phase/live and neutral connections are correct,
there is a fault with the mains supply

(see (b) - below)

.

Note: The ESP unit may have suffered damage
- check the status indication

(see page 26)

.

(b) Illumination at any time

The WARNING light will flash when the neutral to earth
voltage exceeds 30 volts. The faster the flashing, the
higher the voltage between neutral and earth (at very
high voltages the WARNING light may appear to be
permanently illuminated).

Disconnect the ESP

protector immediately and check the mains supply

.

The ESP protector should not be reconnected until the
cause of the fault has been identified and rectified.
Note: The ESP unit may have suffered damage
- check the status indication

(see page 26)

.

Installation check (LED units)

The ESP unit should now be correctly installed. Switch the
power supply on. Check that a green LED per phase and
neutral is lit.

See Figure 16

. The unit is now fully operational.

Watch the WARNING light for 30 seconds. If it is flashing or lit
there is a problem with your installation

(see opposite)

.

PE

L

L'

L2

L2'

L3

L3'

N

N'

11

14

12

STATUS

L1

N

L3

L2

STATUS INDICATION

ESP 415D1

125 AgL

GREEN

FULL PROTECTION

GREEN & RED

REDUCED PROTECTION

(replace unit)

RED

NO PROTECTION

!

WARNING: If lit / flashing
disconnect unit & check
Neutral to Earth voltage

T2

C

T1

I

imp

4kA

I

n

20kA

I

max

oc

40kA

U

6kV

B

D

T3

EN/IEC 61643

PATENT

APPLIED

FOR

c

z

ac

U

280V 47-63H

Figure 16 - Status indication lights showing full protection on all
phases and neutral. On D1R units, status indication is shown on
the remote display unit.

TNB 1639 ESP D1 Instructions (Final Art) new size 1/4/10 09:51 Page 24

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Summary of Contents for furse ESP 120 D1

Page 1: ...ham NG2 1EB United Kingdom Tel 44 0 115 964 3700 Fax 44 0 115 986 0538 www furse com Copyright Thomas Betts 2010 Issue 1 Installation instructions for mains wire in protectors ESP D1 D1R D1 LCD and D1R LCD variants TNB 1639 ESP D1 Instructions Final Art new size 1 4 10 09 50 Page 2 ...

Page 2: ...26 Status indication LCD units 26 LCD display settings 30 Remote indication 34 Maintenance 35 Application notes 36 Remote display cut out template 39 Key points of installation Install protectors very close to the power supply to be protected either within the distribution panel or directly alongside it Mount units within a panel or WBX enclosure ESP D1 units can be installed in parallel or for po...

Page 3: ...installation Check that the voltage between neutral and earth does not exceed 10 volts If this voltage does exceed 10 volts the installation is unsafe Find and rectify the cause of this fault before proceeding For delta supplies with no neutral see page 13 Make sure that the supply voltage is suitable for the unit 8 9 10 1 2 Supply Rated Unit Voltage Voltage Range VRMS VRMS ESP 120 D1 Phase to Neu...

Page 4: ...5 D1 LCD installed on a DIN rail within a power distribution panel Figure 2 ESP 415 D1 LCD installed next to a power distribution panel in a suitable WBX D enclosure Alternatively for three phase units a remote display option is available Units can be installed within the power distribution panel with the remote display mounted on the front of the panel see 4 remote display When mounting the units...

Page 5: ...verse of 3 phase protector showing spring loaded DIN foot locked onto DIN rail Remote display Three phase ESP D1R and D1R LCD units include a remote mounting display to ensure optimum positioning of the unit along with quick and easy status checking The remote display should be mounted in a clearly visible position typically on the front of the distribution panel see Figure 5 For remote display co...

Page 6: ...for the specific load current The terminals of the ESP unit can receive up to 35 mm2 stranded cable Any type of protector installed in parallel shunt with the supply will have additive inductive voltage on the connecting leads This resultant voltage let through the protector is hence seen by the equipment to be protected see 5 and 12 Series installation eliminates the additive voltage associated w...

Page 7: ...earth respectively 7 Under no circumstances must the ESP unit be installed without connection to its neutral Where no neutral is present eg delta supplies the neutral N terminal on the ESP unit must be connected to earth in addition to the earth terminal This will result in a greatly increased earth leakage current On some delta supplies the voltage between phase and earth neutral may exceed the r...

Page 8: ...tream of the isolator Note the additional earth bond to the metalwork of the distribution board This technique is explained in 12 iii PE Enhanced Mains Protector EN IEC 61643 PATENT APPLIED FOR L L L2 L2 L3 L3 N N 11 14 12 STATUS Figure 10 Three phase ESP protector connected to the nearest available outgoing MCB way to the incoming supply The MCB also provides the means of isolation Since there is...

Page 9: ...be able to isolate or disconnect the ESP unit from the supply The supply to the entire distribution board should not be switched off on many computer power supplies and other critical loads The means of isolation should therefore be installed in the connection to the ESP unit Figures 12 13 show example connection schematics Where it is also necessary to fuse the connection to the ESP unit see 10 F...

Page 10: ...ply Refer to the fuse manufacturer s operating characteristics to ensure discrimination particularly where an installation includes a mixture of types of fuse or of fuses and circuit breakers Live phase connecting leads can be fused by either a installing high rupture capacity HRC fuses or switch fuses in the connecting leads at the supply end of the lead See Figure 14 or b installing up to a 125 ...

Page 11: ... following procedure is suggested see Figure 10 Size of connecting leads For parallel connection the connecting leads between the terminals of the ESP unit and the power supply should be 10 mm2 multi stranded conductor copper If required the terminals on the ESP unit will accept connecting leads of up to 35 mm2 For series connection see 6 Length of connecting leads parallel connection For ESP unit...

Page 12: ... series connection For ESP units installed in series for power supplies 125A the connecting lead to earth needs be kept as short as possible and ideally should not exceed 25 cm 10 inches from the busbars to the unit s terminals ESP units can be mounted upside down or on their side if this facilitates shorter connecting leads Three phase ESP D1 protectors are available with rotating LCD display ESP...

Page 13: ... the WARNING light may appear to be permanently illuminated Disconnect the ESP protector immediately and check the mains supply The ESP protector should not be reconnected until the cause of the fault has been identified and rectified Note The ESP unit may have suffered damage check the status indication see page 26 Installation check LED units The ESP unit should now be correctly installed Switch...

Page 14: ...ion ESP415D1R SURGE PROTECTION ACTIVE L1 L2 L3 N N E 30V RLY ACTIVE The unit is now fully operational These display messages will be visible and alternate at all times the protector is connected and is functioning correctly Where a fault or power supply issue is detected by the protector the LCD message will change the backlight will flash and the protector will sound an alert Several types of fau...

Page 15: ...N REPLACE UNIT L1 L2 L3 N N E 30V RLY DISABLED NO PROTECTION REPLACE UNIT L1 L2 L3 N N E 30V RLY DISABLED Neutral earth warning The Neutral earth warning screen will display if there is an excessive voltage present between neutral and earth or if there is no protection on the N E connection The backlight will flash and an audible alert will sound a Illumination at time of installation If the WARNI...

Page 16: ...anced functionality to improve legibility of status information The display functions are controlled through the 4 buttons located near each corner of the screen where control icons are displayed Display functions include Rotate display function Enhanced Mains Protector EN IEC 61643 PATENT APPLIED FOR ESP415D1R SURGE PROTECTION ACTIVE Enhanced Mains Protector EN IEC 61643 PATENT APPLIED FOR ESP415...

Page 17: ...nhanced Mains Protector EN IEC 61643 PATENT APPLIED FOR REDUCED PROTECTION REPLACE UNIT ESP D1 LCD and D1R LCD protectors include a buzzer alert which activates when a unit has reduced or no protection or when there is a supply fault phase loss excessive N E voltage To deactivate the buzzer firmly press the silence buzzer button buzzer deactivates for 1 hour For Protector Information start with th...

Page 18: ...ng of the reduced protection state the normally closed volt free contact can also be used to signal power loss on one or more phases eliminating the need for special relays See Figure 17 The ESP units remote indication is rated at 1 amp 250V AC A minimum load of 10mA 5V DC is required to ensure reliable contact operation Figure 17 Operation of normally closed NC and normally open NO volt free cont...

Page 19: ...n the load side of the RCDs if the load in question is external to the building 2 1 This should help to reduce any spurious tripping of such devices due to transient overvoltages Special transient hardened RCDs type S can be obtained from a number of manufacturers Insulation tests flash testing The ESP unit should be fully disconnected from the circuit before testing Otherwise the ESP unit will tr...

Page 20: ...live However it is also possible to connect the ESP units spare terminal s to whichever live terminal is in use at the unit Use of powered screwdrivers The use of powered screwdrivers is not recommended unless measures are taken to ensure screws are tightened correctly and not damaged maximum torque value is 4 5 Nm for these terminals 5 6 Thomas Betts Limited Furse Wilford Road Nottingham NG2 1EB ...

Page 21: ...ng the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specifications are subject to change without notice The user is responsible for determining the suitability of this product ...

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