Very High Current EMC Filter Range

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This range of filters has been developed for use on very high current three phase and neutral mains supplies. All filters employ MPE’s proprietary low leakage filter design incorporating current compensating inductors to provide very low heat dissipation and hence running costs.

Two performance categories are offered both providing full insertion loss with or without load. These filters are ideal for use in EMP protection systems and in TEMPEST applications.

Customised terminal chambers can be supplied to interface to individual installations.

All types are available with transient suppressors fitted to the input terminal busbars.

All MPE installation filters are tested using the test methods defined within the following standards and meet or exceed the relevant performance and/or safety criteria defined within these standards:

Mil-F-15733
Mil-Std-220C
CISPR17:2011/BS EN 55017:2011
UL1283
LVD 2014/35/EU

GENERAL SPECIFICATIONS

Rated Voltage

250/440V a.c. 50/60Hz

Rated Current

As tabulated

Insertion Loss

Standard performance – 100dB 100kHz – 1GHz

Extended performance – 100dB 10kHz – 1GHz

Maximum Temperature Rise on Full Load

16°C

Operating Temperature Range on Full Load

-25°C to +50°C

Maximum Full Load Heat Dissipation

As tabulated

Maximum Volt Drop per line at Full Load d.c. Current

As tabulated

Discharge time to below 34V

30s maximum

Maximum Continuous Earth Leakage

Current (per Neutral-Earth Volt at 50Hz)

250mA

Maximum Overload Current Rating

1.25 times rated current for 15 minutes

Maximum Short Circuit Fault Current Rating

20,000A for 1 second

RANGE AVAILABLE

Current Rating (A)	MPE Part Number	DC Resistance (mΩ)	Volt Drop (mV)	Heat Dissipation (W)	Major Dimensions (mm)			Case Sizes (see table below)	Approx Weight (kg)
					A	B	C
Three Phase (N+) Standard Performance
800	DS23973	0.13	100	250	1554	864	285	a	250
800	DS23521	0.13	100	250	1554	864	285	c	250
1200	DS26310	0.07	76	350	1600	1000	300	a	300
1200	DS26311	0.07	76	350	1600	1000	300	c	300
1600	DS26320	0.04	65	400	1800	1000	350	a	350
2400	DS26330	0.03	60	500	2000	1000	400	a	450
Three Phase (N+) Extended Performance
800	DS26307	0.2	150	375	2400	864	285	a	350
800	DS26308	0.2	150	375	2400	864	285	c	350
1200	DS26314	0.1	115	550	2500	1000	300	a	450
1200	DS26315	0.1	115	550	2500	1000	300	c	450
1600	DS26324	0.06	100	600	2900	1000	350	a	550
2400	DS26334	0.04	90	750	4100	1200	450	a	650

Note: Extended performance filters are supplied as two interlocking parts for ease of handling and installation.

Note: “C” case styles are not offered for 1600A and 2400A filters as it is more practical to use a filter with case style “A” and penetrate the shield via the terminal enclosure.

TRANSIENT SUPPRESSION

All types can be supplied with integral transient suppression fitted between each input terminal and earth.

Varistor rating : 2750V a.c. 360 Joules

Other varistor ratings can also be supplied.

To specify the transient suppressed version, suffix V is added to the filter part number (see ordering code).

TYPICAL INSTALLATION DETAILS

After mounting, for safety and for shielding purposes the filter terminals must be enclosed by screened covers. Custom terminal chambers and mounting frames can be supplied if required.

These filters have integral blind inserts to facilitate mounting and screening of terminal enclosures. They must not be used to support the weight of either the filter or the terminal enclosure.

Because of the very high current rating of these filters, it is important that all conductors pass through a common cable entry point in the shield to avoid eddy current heating effects.

ORDERING CODE

DS XXXXX / X / X e.g. DS23973CV

Filter Part Number

Suffix C for standard cable entry
For other cable entries, see Installation Details page

Add suffix V for transient suppressed filter

STANDARD PERFORMANCE FILTERS

Transportation holes may be used for connection of a separate safety earth, if required.

EXTENDED PERFORMANCE FILTERS

Note: Extended performance filters are supplied as two interlocking parts for ease of handling and installation. An interface gasket is supplied to join the two sections.

TERMINAL DETAILS

DIMENSIONS

Filter Current Rating (A)	Dimensions of Standard Performance Filters (mm)
	A	B	C	D	E	F	G	H	I	K	M	N	R
800	1554	864	285	180	964	920	530	247	125	1420	162	180	125
1200	1600	1000	300	185	1100	1056	600	200	155	1450	125	250	155
1600	1800	1000	350	212	1100	1056	700	200	200	–	125	250	–
2400	2000	1000	400	230	1112	1056	800	200	200	–	125	250	–

Filter Current Rating (A)	Dimensions of Extended Performance Filters (mm) (Where Different From Above)
	A	L	S	T	U
800	2400	846	442	450	2265
1200	2500	900	447	428	2350
1600	2900	1100	550	478	–
2400	4100	1500	900	600	–

Filter Current Rating	Busbar Size (mm)
800	50 x 8
1200	80 x 10
1600	125 x 10
2400	Double bars each 127 x 16 with 10mm separation