Operating instructions for POLIM
©
-D surge arrester ABB
16 EN Doc. 1HC0010173 AB
7. DISPOSAL
POLIM
®
-D surge arresters are environmentally-friendly products which must be
disposed of based on the respective applicable regional regulations in an environ-
mentally-friendly manner. The materials should be given up for recycling.
Constituent components are:
• silicone rubber (not halogenated) for the external insulation
• mounting sections and other parts made of aluminium
• metal-oxide varistors
• fibreglass-reinforced plastic lugs
• steel mounting hardware
Constituent components of the disconnecting device:
• terminals and metallic parts from aluminium
• enclosure from thermoset material
• small propellant charge
If disconnecting device has not been damaged it can be assumed that the small
propellant charge had not been tripped. In this case disconnecting device shall be
disposed according to the local laws and regulations. Do not open disconnecting
device.
The remaining parts of a disconnecting device, which has tripped, can be recycled.
Silicone rubber (not halogenated)
The silicone rubber can break down into SiO
2
and CO
2
, thus uncovering the en-
cased metal-oxide varistors.
Metal-oxide varistors
The metal-oxide varistors are sintered ceramics consisting up to 90% of ZnO. The
following additions are also contained within:
• percent by weight over 1%: Bi
2
O
3
and Sb
2
O
3
, which are considered to be dan-
gerous substances according to EU ordinances
• percent by weight between 0.1 and 1%: NiO and Cr
2
O
3
, which are considered
poisonous and dangerous materials pursuant to EU guideline 91/689/EEC
Metal-oxide varistors are coated with a thin glass coating containing lead-oxide
(< 0.1% of the weight).
The substances are present as an oxide in metal-oxide varistors. A wash-out test
in accordance with an EPA specification (Federal Register/vol. 45, No 98 /Rules
and regulations) has shown that the sintered metal-oxide varistors can be dis-
posed of as industrial waste without infringing on EEC guidelines.
No danger to personal health or the environment is present during normal opera-
tion.
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